The mood was festive in Seattle as dozens of gay and lesbian couples got in line to pick up marriage licenses at the King County auditor's office. On Wednesday, Gov. Chris Gregoire signed into law a measure legalizing same-sex marriage in Washington state. The law takes effect Thursday. King County and Thurston County announced they would open their auditors' offices shortly after midnight Wednesday to accommodate those who wanted to be among the first to get their licenses. Hours later, as the line grew, volunteers distributed roses and a group of men and women serenaded the waiting line to the tune of "Going to the Chapel." Because the state has a three-day waiting period, the earliest that weddings can take place is Sunday.