Public restrooms leave much to be desired. Mall bathrooms tend to be clean, but crowded. Deluxe hotels are your best bet and they’re easily accessible (hotel guards are far too polite to bar foreigners from entering).
Closing Time
Be aware that all venues close at 1am or 2am at the latest. Do yourself a favor and don't start arguing with the bartender for “another round.” He isn't allowed to pour after closing time.
Royally Prepared
Wearing flip-flops is not allowed in royal palaces and even outside on the streets beachwear is discouraged. A clean, wrinkle-free (short-sleeved) shirt and long trousers or skirts will earn you respect from the locals.
Holy Head
Don’t ever touch a Thai child on the head—considered the holiest part of the body, locals believe that touching a child’s head will shorten its life.
English?
Chiang Mai is tourist-driven, so even that tiny old lady weaving baskets in front of her cart will understand basic English. While bargaining, she’ll use her hands and feet if necessary. You can do the same—just keep smiling.
Spice Quotient
One Thai phrase you might want to tuck in the back of your mind is “mai pet,” or “not too spicy, please!” This will come especially handy at the night markets, where dishes, though delicious, can be fiery.