In 2016, a quarter of gay couples who married in New Zealand, where same-sex marriage has been legal since 2013, were Australians.

Hayley Fisher, a senior lecturer at the University of Sydney, said pent-up demand will result in a “pop of weddings” over the next few years. But while it was too early to tell, Dr. Fisher cautioned that the long-term economic effects are likely to be modest.

“There is going to be a whole new market, but there will be a stabilization,” she said.

Many suppliers in the wedding industry have proactively begun changing their marketing strategies. Some, like Katsu Nojiri, who photographed Thursday’s wedding, are experimenting for the first time with Google ads.

Others, like Raphael Kahn, managing director of Zest, which hosts 120 weddings annually at two venues, have begun advertising in same-sex friendly wedding directories.

“It definitely is good for the industry, and we certainly want to be there when it all happens,” Mr. Kahn said.

Business listing sites supportive of same-sex marriages say they have seen a burst of suppliers wanting to be included. Alexander Ross, the founder of the wedding guide Mr. Theodore, estimated a 200 percent increase in inquiries for listing requests since November.