I came up with mini-golf in the car. The non-fantasy one at Fantasia Gardens is *really* tough, too! BIL is in school to be a PGA teaching (and, fingers-corssed, tour playing) professional and even he was at his wit's end with some of it!
Are you sure all of the coures are booked? Even the shorter 9-hole skins course? I have some contact numbers for group golf outings, maybe they can pull a few strings. PM me if you'd like that cofntact information.