lets see, i know some guys like Pattaya but it is a dirty cesspool with no real scenery except for old foreign perverts looking to bang cheap young hookers. the sea is dirty and the streets are dirtier. a waste of time unless u are desperate.
watch the news about the protests when u get to BKK so u can avoid those areas. it might be wrapped up by then but these idiots may hang around for a couple more weeks.
u got a pretty short trip planned. it will be over before u know it. stay cool (its already 100+ F / 40+ C) and drink lots of water in the day so u can go all night
