Must a Catholic innkeeper host a same-sex wedding reception?

Does a Catholic innkeeper have the right to decline to host a same-sex wedding reception?  At least in Vermont, the answer will undoubtedly be "no."  My own view is that the innkeepers may properly be subject to boycotts, protests, etc., for staking out such morally contested positions, but I do not believe that they should be subject to the coercive power of the state for such positions absent a showing that they have blocked meaningful access to a good or service deemed essential by the political community.  Note that the couple had no difficulty booking another venue.