Porn is completely illegal in Thailand. And, if you were to get caught shooting such content, the consequences could be heavy (unless your 'connected' or 'protected in some way). However, working remotely without a work permit is questionable. I know a ton of foreigners ('farangs') who live there and work remotely, in both mainstream and adult sectors, and they do fine but they don't broadcast their lives to anyone. So, best advice: (1) Your business is YOUR business only. Keep it yourself, especially if you're quite successful and (2) be sure that the girls that you're bringing back each night aren't seeing what you're up to (blackmail is a bitch). Simply close down the laptop each night before you head out.
Top spots:
Party hard / be a dirtbag - Pattaya
Anonymous fun (based on the sheer size of, and selection in, the city) - Bangkok
Party hard / be a dirtbag on beautiful beaches / pay a lot more than anywhere else in Thailand - Phuket
Up the standard / party with lots of idiot week/two weeks tourists / be ripped off for everything - Koh Samui (applies to Phuket as well)
To experience the 'real' Thailand and find hot girls who are (generally) not complete hoes - Hua Hin and Chiang Mai