My big fab gay wedding

When you realize you’re finally getting married after eight years of waiting, you kind of want to share the news with everybody — even Prince William.

New Yorkers Bill White and Bryan Eure mentioned their upcoming nuptials to his royal highness at a veterans event in Los Angeles this month. After William offered an, “Oh, that’s terrific. Congratulations!” the couple asked if he might share any wedding tips. “He said, ‘If you just make sure one person is the final decision-maker, and you’re OK with that, you’ll be all right,’ ” says White.

Princely advice aside, Eure describes the wedding-planning process as “a team effort — I dream it up, and Billy makes it happen!”

PHOTOS: MY BIG FAB GAY WEDDING

White, the former president of the Intrepid Sea, Air and Space Museum who now heads the Constellations Group strategic consulting firm, and Eure, who is a senior vice president at Willis commercial insurance brokerage, describe their wedding style as conservative, classy and tasteful.

Oh, and big.

In addition to a small church ceremony at St. Bartholomew’s and a wedding-eve reception at GOP fund-raiser Georgette Mosbacher’s Fifth Avenue home, the couple expects a jaw-dropping 600 guests at their September celebration at the Four Seasons — the first same-sex wedding in the restaurant’s history. The guest list includes three former presidents (George W. Bush, Bill Clinton and George H.W. Bush), two New York governors (Andrew Cuomo and David Paterson), multiple media luminaries (Barbara Walters, Anderson Cooper, Bob Pittman), a secretary of state (Hillary Clinton), two four-star generals (David Petraeus and James Amos), and prominent attorney David Boies, who will serve as best man.

And what’s in store for all those boldface names?

“A tremendous, very masculine party. It’s going to be one of the most exciting events the Four Seasons has ever done,” says restaurant co-owner Julian Niccolini, who hinted at a floating wedding cake bobbing in the pool and a performance by the New York Pops orchestra.

White, 44, and Eure, 31, will be decked out in Hugo Boss tuxes, and they’ve asked guests to arrive in black tie.

“Women are always worried about upstaging the bride,” points out Eure.

“There’s no bride in this wedding, so I want everyone to look their best and dress gorgeously.”

In fact, the couple is steering clear of any “man and woman” wedding traditions. No walk down the aisle, no cake cutting, no Tiffany’s registry (the couple’s asking gift-inquiring guests to donate to the Wounded Warrior Project), not even a lip lock at the end of the night.

“We’re not public-display-of-affection guys,” says White. “We might hug, we might high-five, who knows.”

And while a bouquet toss isn’t in the cards, the couple’s officiant, radio personality Don Imus, is on standby to toss his cowboy hat into the crowd.

Thousands of same-sex couples are scrambling to plan weddings after the passage of New York’s Marriage Equality Act on June 24. (Marriage licenses will be available to same-sex couples beginning Sunday at 8:30 a.m.) From celeb-studded black-tie affairs to small City Hall ceremonies, from elopements in the Catskills to Gatsby-style gatherings, gay couples are racing to plan the big days they’ve been dreaming about for months, years and decades.

But gay weddings are also a dream for Big Apple wedding vendors, who anticipate a spike in business anywhere from $100 million to $400 million within three years. (According to the 2011 American Wedding Study by Brides magazine, the average cost of a US wedding is $26,500, with costs of $32,000 and higher common for the NYC metro area.)

“We got a flurry of phone calls immediately after it passed,” says high-end events planner Harriette Rose Katz, who’s helping organize White and Eure’s Four Seasons affair.

One of those calls came from a straight couple who’d been waiting three years to get married until their best friends, a gay couple of six years, were also able to legally wed in New York.

“Now we’re planning both weddings!” says Rose Katz.

Jennifer Gilbert, who runs Save the Date event planning, has been inundated with inquiries, and she’s working feverishly on a wedding for a gay “celebrity hairstylist” in the Hamptons later this summer.

Gilbert has suggested a rainbow carpet for the ceremony aisle and a subtle rainbow palette of reception flowers to those couples who want to acknowledge the historic marriage bill on their big days.

Nicolle Rodriguez, owner of Cakes by Nicolle in Hell’s Kitchen, says the number of same-sex couples ordering wedding cakes in recent weeks has been “overwhelming.”

One pair told her they’d been saving their groom-and-groom cake toppers for three years, determined to use them someday for an NYC wedding, no matter how outdated the statues became.

Rodriguez says she’ll hire extra help this fall to handle the surge in same-sex weddings, and advises couples hoping for summer weddings not to be discouraged by last-minute preparations.

“They’ve been waiting so long for this moment — it’s their market now,” she says.

Indeed, iconic wedding venues like the Plaza, the New York Public Library, the Loeb Boathouse in Central Park and the Palm House at the Brooklyn Botanic Garden all tell The Post they welcome same-sex weddings and still have availability on a few summer Fridays and Sundays. Even the Yankees are stepping up to the plate.

“We look forward to gay marriages happening at the stadium,” says spokeswoman Alice McGillion.

And several same-sex couples can say their weddings made it to Broadway when the St. James Theatre hosts onstage ceremonies immediately after the July 25 performance of “Hair.”

Brad Boles, an interior designer (known as Jill Zarin’s “gay husband” on “The Real Housewives of New York”) and Gregg Carder, who works in real estate, are planning to go big for their nuptials: think Jay Gatsby and Taylor Dayne.

“Within hours [of the gay-marriage vote] their texts started rolling in, ‘Get ready . . . Great Gatsby. Here we come!’ “ says celebrity wedding planner and caterer Andrea Correale, president of Elegant Affairs.

The couple’s vision of wedding grandeur includes a Roaring ‘20s engagement party next March at Mar-a-Lago resort in Palm Beach, Fla., two separate bachelor parties (one in Newport, RI, the other in Las Vegas) and a Gatsby-style wedding for 250 at a historic 1910 mansion in Tuxedo Park, NY.

Guests (who will be asked to don white tails, diamonds, etc.) will be transported by horse-drawn carriages and dine on period-specific cuisine while an elaborate orchestra serenades them. And pop star Taylor Dayne will sing “I Will Always Love You” for the couple’s first dance.

Thomas Carpenter, a 43-year-old lawyer from Brooklyn, and David Slivken, a 42-year-old internet marketer, are taking a more minimalist approach for their November 11 nuptials, planning an intimate, food-focused ceremony at a favorite Ditmas Park restaurant, The Farm on Adderley. The men have been partners for more than five years, but don’t like the idea of what they call a “second-class wedding” in another state. Within seconds of the New York vote, messages from friends rolled in offering congratulations — and asking which date to save. “I’m having an appreciation for bridezillas who lose it over the minor details!” jokes Carpenter, who’s feeling the wedding planning pressure.

Doris Tamai, 39, and Melissa Zappasodi, 27, of Suffolk County, will vow their eternal love for one another in September, wearing white gowns they found together at Kleinfeld Bridal (“We didn’t mind seeing each other’s dresses — we needed the help,” laughs Tamai, an anesthesiologist.) Their “elegant and traditional” ceremony at Bedell Cellars, a Long Island vineyard, will feature nine bridesmaids, string musicians, Christian prayers, a chuppah, Champagne toasts, a sit-down dinner for 130 and two ring bearers carrying a “Here Come the Brides” banner.

Although the women were married in Connecticut last summer, they say a home- state ceremony holds far more meaning.

“We are New Yorkers, and we are proud of being able to get married here,” says Zappasodi, a registered nurse.

Dennis Vollkommer and Ronald Simmons, on the other hand, plan to legalize their union with a quick justice-of-the-peace ceremony during the week of July 25. But only because they hosted an “over-the-top” wedding at Chateau La Mer catering hall in Lindenhurst, LI, just weeks ago.

The North Babylon couple — Vollkommer, 48, is an ER registration nurse and Simmons, 58, is a general manager at Staples — walked down the aisle May 6 in evening tails to the song “Today I Met the Boy I’m Gonna Marry” and asked guests to hoist rainbow flags for the entrance of their 12-person wedding party. They arrived by Rolls- Royce and feted guests with a roasted pig, multiple cocktail hours, an ice-cream bar and a five-tier wedding cake adorned with crystal brooches and ribbons.

“It was a fantasy wedding,” says Vollkommer.

But, he says, none of the hoopla can compare to the quiet day next week when his marriage will be recognized as legal in the state of New York.

“This is a dream come true for a lot of us,” he says.