Originally Posted by Michael O

If there is a delivery charge I tip minimum to the nearest dollar assuming that the person delivering is getting the surcharge.
Same as in Bangkok if they charge ++ (vat 7% and 20% service charge) I do not tip assuming that the service charge goes to the service.

I am sorry but advertising one price and then getting hit with more than 25% in extras then if I tip another 20% we are close paying 150% of the advertised price its BS.
Tipping should be 5-10% if you get really good service and leaving no tip should not be a crime. If you depend on tips to make a living you should blame your government not your customers.