By Gail Sullivan October 20, 2014 Follow @g_forcewinds After a California federal appeals court declared same-sex marriage legal in Nevada earlier this month, the wedding capital of the world welcomed gay couples with open arms. The Las Vegas Convention and Visitors Authority bought a full-page USA Today ad featuring a wedding cake with two grooms on top looking out over the Vegas cityscape. The tagline: “Now you can say ‘I do’ to one more thing here.” The city also has a Web site devoted to gay travel. But a handful of Sin City’s dozens of wedding chapels have been turning gay couples away. -- Meanwhile, laws banning discrimination in public accommodation have required bakers, photographers and other businesses that provide wedding-related services to serve gay customers. In Idaho, where gay marriage also recently became legal, a religious liberty group, Alliance Defending, filed a lawsuit Friday on behalf of two ordained ministers who don’t want to perform same-sex marriages at their for-profit wedding chapel. Since it’s not a church, the chapel likely falls under the state’s public accommodation law, Coeur d’Alene city attorney Warren Wilson told the Idaho Spokesman-Review. Donald and Evelyn Knapp, who operate the Hitching Post, face 180 days in jail and up to $1,000 for turning gay couples away.