Marriage is none of the feds friggin’ business. Marriage is strictly a personal and state issue, not a federal issue. The Constitution gives the feds no authority to interfere with marriage at all.
It takes 4 votes to grant the hearing of an appeal, so at least one of Roberts or Kennedy had to vote to hear it.
My guess is a 6-3 or 7-2 decision in favor of the bakers; but it could be 8-1.