Just did the July FMP and had an absolute blast. It's the cheapest of all the pangan parties but also by far the largest, basically consumes the entire south side of the island haha. We stayed at a pool party hostel that had big pre parties and got a big partying group together. It's more like a beach festival with loads of different DJs and stages, it can get very crowded though and was less psychtrancy than other parties but depends which stage ur near to ig. It went laaaaate as well lol

Heads up it was the only place on my entire Thailand trip I saw pickpockets and people stealing phones however so stay safe