I used ADP a few years ago when they were at Brackett. No problems from me and everyone was friendly. You basically got what it said on the tin. Like most FTO's they have some (or did when I was there) half decent and the odd old dog of aircraft. When I booked with them I specifically requested an aircraft that had IFR fit as I wanted to hone my skills and wasn't disappointed.
Make sure you get to Vegas for a night. Accomodation is cheap, don't book in advance just get a midweek rate at one of the top hotels/casinos for 50 or so bucks online. The Grand Canyon is a great sight as well although be aware of the airspace restrictions. There are loads of other places that are fun to fly around so do a search. You will have much more fun out west than buzzing around Florida.