I went to the Tampa bike night on a thursday once, I'll probably never go back. I got passed by two guys on CBR's doing wheelies on both sides of me. Lots of bikes, but lots of squids.
There are a couple in orlando, but if you've seen one tricked out, 5-foot extended swingarm Hayabusa, you've seen them all. I usually just prefer to go riding on bike night. I might stop at a bar or a pool hall for a couple hours, but i'm back on the bike riding again until at least midnight.
I really like Johnny Rottens in sanford. A lot of harley guys, but most of them are cool and if crazy dave picks you, you drink for free all night (I do NOT drink and ride or drive for that matter) I play pool there pretty much every thursday.