If you plan to go to Pattaya now, it might be better not to make a hotel reservation.
Hotels that used to be completely full by now, even like the popular Flipperhouse in Soi 7 for example, now have plenty of rooms available. They will give you a reduced price immediately, you don't even have to negotiate for it (reduced = 30% to 50% lower then prices indicated on their website). Previous years, you could forget it to come to Pattaya, just walk into Flipper in october and still find a room.
Maybe it will change in november or december, so don't blame me if you can't find a room then (however it seems unlikely to be a "normal high" season with the political troubles and financial crisis).
But for now, don't book, just go and see.