I spent a couple of weeks at Fairtex in Bangkok. It was the more expensive of the camps but it was well and truly worth it. I learnt a fair bit and enjoyed the time over there.
As far as MMA goes, I think Tiger has a pretty poor reputation. My personal view is that you go to Thailand either to train your stand up or get some cheap AAS. The good part is that there will be a bunch of guys you live with to learn off also. So it could be a good experience.
Keep us updated on how it goes because I wouldn't mind an extended stay down at Phuket.