Hi,
Just thought I'd let you know (if you didn't already) that many dive ops and restaurants are closed for the month of september in Provo. Your dive op choices will almost certainly be either Dive Provo or Caicos Adventures. I dove with both last September and, although I would be happy to dive again with either one, I'd probably go with CA. Not sure about Club Med, but I probably wouldn't dive with them anyway. Both dive ops will pick you up and drop you off at your hotel. The other dive ops (Flamingo, Provo Turtle divers, ocean vibes...) were all closed last September, and they referred me to the two bigger ops I mentioned.
The diving in Provo was great... I was there right after the hurricane, and the visibility was not the best (50-80ft), but wow.. the sharks, the eagles, the turtles... Even the boat ride out of the south marinas... shallow turquoise water so calm you could see the starfish on the sea floor while the boat is flying by. The dives are all wall dives, some with current... but most in the 60 to 90ft range. Might want to consider nitrox for longer bottom times.
If you are looking for low key, laid back island... Provo is definitely the place. No cruise ships, no McDonalds, no downtown souvenir cities... I would recommend renting a car if you really want to check out the local places, but you'll have to be prepared to drive on the left. The majority of resorts are on Grace bay, but I don't like staying too far to the east of the Ports of Call (Club Med, Ocean club, royal west indies... ) only because we like driving around and eat at the local places... we've been to provo 4 times and found that we always ended up driving to places towards the middle of the island. Also, if you snorkel at all, smith's reef is fantastic and bight reef at coral gardens resort was nice and very convenient... I saw a big reef shark swimming right through coral gardens last time I was there.
Anyway, in September, a lot of places are closed, so you'll have to figure out what is open and what isn't. There are plenty of places to go, and the beaches have never been crowded any of the times we've been there. You just have to hope the hurricanes stay away.