Answer:
It depends, but the general answer is yes. Some churches will rent out their facility to anyone who wants to pay whatever the fee is (the Baptist church I used to go to charged $300, but that was a few years ago).
However, some churches will only allow members to use the facility, and some churches will only allow two Christians to marry. In general, the Baptist church has no rules about Baptists marrying non-Baptists, but most preachers will want to counsel with the couple to see if they both are Christians.