LAS VEGAS — While gay couples still can’t get married in the marriage capital of the world, Las Vegas wants to let them know they — and their money — are more than welcome to the buffet of other activities Sin City has to offer.

The city’s tourism authority recently launched its first mainstream TV campaign aimed at the LGBT community: a commercial featuring a hunk and a heavy dose of innuendo. The first gay nightclub inside a Las Vegas Strip casino opened up this summer.

And casino pools that struggled to distinguish themselves in the high-flying world of day-clubs have found a niche in gay pool parties.

The efforts have landed the city among the top destinations for gay travellers, who LGBT tourism experts say are more likely to be childless, take more trips and tend to have more disposable income than the average visitor.

But some business leaders fear that Nevada’s same-sex marriage ban is preventing Las Vegas from reaching its true potential among the demographic.

“We have reached a point in the state of Nevada where our current laws governing gay and lesbian marriage have made our most vital industry, tourism, uncompetitive,” said Michael Weaver, senior vice-president of marketing for Wynn Resorts.

“Nevada resorts, restaurants, caterers, florists, photographers and musicians all need to be allowed to compete with the 19 other states that allow the freedom to marry,” he said.

While the state’s gay marriage ban winds its way through the courts, Las Vegas’ marketers are losing no time in building up the image of an edgy, LGBT-inclusive adult playground.

The Las Vegas Convention and Visitors Authority website sidesteps the wedding question and trumpets non-binding commitment ceremonies, honeymoon packages at the Paris casino and musical acts revered among LGBT fans — icons including Cher, Celine Dion and Elton John have held court in town.

And then there’s the suggestive commercial launched this spring that extends the “What Happens Here Stays Here” mantra.

“People love that ad,” said Jim McMichael, the diversity and cultural marketing manager of the tourism authority. “It allows people to understand no matter what your background, come to Vegas and have a great time.”

The TV spot, which airs on Bravo and gay-focused cable channel Logo, comes on the heels of a 2012 print ad campaign targeting LGBT travellers. It featured frumpy, middle-aged straight couples enjoying themselves amid a sea of chic gay and lesbian couples.

The tagline? “Everyone’s welcome. Even straight people.”

“With the downturn in the economy, we needed to make sure we were reaching to as many markets as possible,” McMichael explained.

Las Vegas isn’t the only gambling town looking to capture LGBT market share. Atlantic City has promoted itself aggressively in paid and social media as an ideal destination for same-sex weddings, honeymoons and bachelor or bachelorette parties.

Sin City stands as second most popular U.S. vacation destination for gay and bisexual men, behind New York City and tied with San Francisco and Chicago, according to a survey by Community Marketing Inc., a research and consulting firm that studies LGBT consumer habits.

Las Vegas ranks third among lesbian and bisexual women, behind New York City and San Francisco and tied with Chicago, according to CMI. The other cities at the top of the list are more established bastions of LGBT pride. Many boast “Gayborhoods,” such as San Francisco’s Castro District, that date back decades.

“Vegas kind of came out of nowhere in the LGBT market” about five to 10 years ago, according to John Tanzella, president and CEO of the International Gay and Lesbian Travel Association, adding, “They’re creative, they’re cutting edge.”

Many resorts rank high on the Human Rights Campaign’s Corporate Equality Index, a barometer of which businesses have policies friendly to LGBT employees and a travel guide of sorts among LGBT travellers.

Still, Las Vegas remains a popular destination simply because it’s Las Vegas.

On a recent night, a group of young men wearing matching black and blue T-shirts arrived at Liaison, the city’s newly opened gay nightclub, to celebrate the upcoming wedding of their friends Tom and Matt.

Inside, shirtless male go-go dancers in goggles and scuba bottoms danced atop the club’s booths. Vintage paintings on the wall showed pairs of muscular men in a rowboat together and playing racquetball. A towering drag queen touched up makeup in the ladies room.

Bryan McGonagill, 28, who came from Atlanta to attend the bachelor party, said he was excited to learn an upscale gay club had opened on the Strip. But he said Las Vegas would have been the top choice for the group even without its latest overtures to the LGBT community.

“We would’ve gone regardless,” he said.