I went to Bangkok late 2008 and i did not need anything,
Try the tuk-tuks ( i think thats how you spell it) in bangkok, they will take you around the sights very cheaply but will take you around 3 shops as well (as they get fuel etc for showing people around),they wait outside for you. my advice is go into the shop say you have,nt any money ask for a business card and that your be back tomorrow you then can walk out in 5 mins you dont get the hard sell the driver gets his fuel.
Go to the Grand palace,
And watch out for the lady boys, some you cant tell apart from the real thing and some could pass for some off pompey's finest.
THe worst one was from behind looked stunning but when he/she turned around had a 40" hairy chest,
People are friendly and helpful,
Enjoy.
Steve