PORTLAND, Maine — Chris Kast and Byron Bartlett already consider themselves married after a 2010 ceremony overlooking Portland Harbor, but now they’re doing it all over again, planning to be among the first to get a marriage license when Maine’s same-sex marriage law goes into effect.

After waiting years for the opportunity, gay couples in Maine’s largest city will not have to wait a moment longer than necessary to get married, with Portland City Hall opening at midnight Saturday, when the law takes effect, to issue the first marriage licenses under its provisions.