Bay Area businesses such as florists and caterers, hoping for a big economic hit from the start of legal gay marriages, may have to wait a while longer.

Some gay couples are waiting to see what happens in November, when a ballot initiative could reverse last month's state Supreme Court ruling to legalize gay marriage. Moreover, while it's legal for gay couples to wed in California, other states may not recognize the license.

"It's way too soon to tell how many people will be marching this way for a ceremony that may or may not mean anything in their home states," said Jerry McHugh at Community Marketing, a San Francisco marketing firm that charts gay and lesbian tourist demographics.

Bay Area tourist bureaus began reaching out to same-sex couples, coinciding with a report last week by the Williams Institute at the University of California-Los Angeles that estimated same-sex marriages would produce a three-year, $63.8 million revenue boost to the state.

"There's a lot of opportunity if people come here to have their weddings," said Dan Fenton, president and chief executive of the San Jose Convention & Visitors Bureau. The Hayes Mansion, California Theatre and the Tech Museum of Innovation top his list of unique locations.

"You could easily see a group of 300 to 400 guests at a wedding that costs $150 to $200 per head," he said. "This can start to add up."

The San Francisco Convention & Visitors Bureau added a new section on gay marriages to its Web site recently, a year after launching a $100,000 gay travel ad campaign.

And at last week's San Jose Pride festivities, a local AAA office distributed fliers with a photo of a gay couple in wedding tuxedos.

So far, though, the San Jose Oakridge AAA office has not booked any honeymoon packages for gay or lesbian couples. And no same-sex couples have yet reserved the popular Fairmont San Jose hotel for a wedding reception.

Many gay couples are taking their time to plan weddings, said the Rev. Mike Ellard of Metropolitan Community Church in San Jose. Ellard, who has waived all wedding fees for same-sex marriages, has received only a few out-of-state inquiries.

And some local gay couples are preferring to keep their weddings small.

Rich and David Speakman, the first gay couple to marry at San Jose City Hall on Tuesday, decided against a big reception because they had tied the knot in San Francisco four years ago. They'll celebrate with 100 family and friends at the restaurant 71 Saint Peter in August.

Jeffrey Knollmiller and his partner of 10 years, Andrew Harker, will wed this weekend in their Redwood City home. With a budget of $3,500, they opted for an intimate ceremony rather than an extravagant party. The couple sent out online wedding invitations, and ordered their food and cake from local stores.

"For us, it's not about putting on a big, fancy show," Knollmiller said.