Wai - Traditional Thai Greeting, Bangkok
A Bow with two hands together which you will put your hands infront of your chin! And say" Sawasdee!" Its a sign of respect in Thailand and people here always used that in their everyday lives!
Most of the people are very smiling, friendly, specially when you have babies with you. They're very close to babies and I think they love babies!
Most of the people can communicate with the medium of instruction which is English but if they can't say it properly, they can only understand you. In Thailand, everybodies heads are sacred so be aware not to touch their heads! Be respectful in terms of their King as they have a strong respect in it.
Try to avoid those tuk-tuks, taxi driver's in the night time as many of them will charge you hardly. If possible, ride with their BTS Sky Train.
I bowed for everything... before meals, before entering temples, when greeting people and when meeting people.
Thais greet each other with a 'wai' a prayer like, palms together gesture, not a handshake. Generally a younger person wais an elder, who then returns it.
Just press your palms together and raise your fingertips towards your eye level and say Sawasdee!!!