The camps are what they are, the bigger question is what are you looking for in a camp and how long do you plan to be around?
Phuket and Pattaya both are pretty tourist oriented, Bangkok is the heart of big fights in Thailand, with Isarn providing many of the fighters in Bangkok. Isarn is the largest and poorest geographic area so more families in Isarn see Muay Thai as a way to earn a living, thus the abundance of fighters from this area.
I wont bother with specific info about Pattaya mainly because I don't have first hand information about the place as I rarely get past Bangkok. One thing is for sure though and thats Thailand wide, camps change from good to bad and back to good again depending on who's running them and who they have training there at the time. A good review and a clean gym last year does not mean you will have the same experience this year so first hand and up to date info is very important.
About the only place I recommend is Bangkok Fight Club just because I know the people there and they are very straight forward with English being well spoken there too. I speak a limited amount of Thai but can communicate quite well as I have been around a long time. If you do not speak Thai, going to a camp that does not have fluent English speakers will limit your experience.
If your sure your going to Pattaya and you present some added information like your weight, age, experience, If you want a pro fight or not? I can contact a friend who is more involved there and get you some better info that will fit you Vs generic info.
Also related, I just heard that Fairtex got a BJJ Blackbelt Instructor "March 2008" but have not confirmed that, Anyone heading down to Pattaya might want to check that out if they train in grappling too.