Yes you need the shots, you should also consider malaria meds, if you have a chance, Chaing Mai in the north is nice and has a great nightly street market, also Koh Phi Phi in the south is nice, everything is very affordable, flights around the country are fairly cheap on Thai Air, but Don't try driving in Bangkok, you will see what I mean.... make sure any water you drink is bottled and that the seal is intact, of course Beer is cheap, "Beer Chang" is my local favorite. It helps a lot if you learn a few phrases in Thai, please, Thank you, Do you have a bathroom Etc. also learn a bit about there customs, do's and don'ts,its easy to offend someone by doing something that you would consider normal. touching a child or person on the head, or pointing your feet at someone are simple things that could cause offence, also public showings of Loud angry talking. Having said that the Thai People are very accomadating and friendly to foriegners.you will love the country, I visited Thailand a few years ago, and fell in love with the people and country