What are the customs when paying the bill?
When you want to leave you should ask for the bill by saying ‘check bin’ or ‘gep tang kap/kah’ and it will arrive (eventually). Please not that the standard in Thailand is to leave a small tip anyway regardless of whether service as included so 20 to 40 THB is a nice gesture on the plate. Those who need a receipt for business purposes should give their business card as Thai law insists that the company name goes on the receipt. This is a pain and it takes forever for them to try to copy all the information out so you might want to just take the first receipt and claim it that way if you work outside Thailand where they operate normal accounting systems!