I think I responded to you (was that you?) over on WDWMagic about our rehearsal at the Cabana Bar. Another thing we considered was a catered party at one of the private IllumiNations viewing areas in Epcot. Most people book those as dessert parties, but you can make it a full meal.
We wanted to keep all of our events in the Crescent Lake area, so the only other locations we even halfway considered were a catered dinner at The Attic (above Jellyrolls at the Boardwalk), sushi at Kimonos in the Swan, or a group dining reservation at Big River Grille. Cabana was the right vibe for us, though, and we have always loved their food.
Outside of the areas we considered, I know that 'Ohana and Hoop Dee Doo Revue are very popular rehearsal dinner locations. I think Splitsville at Disney Springs would be a lot of fun too.