One of Pattaya's top restaurants, Mantra is fun even if you can only afford a classy cocktail (from 180B). The building and interior are sumptuous; try for a seat upstairs where you can overlook proceedings or nestle in a cosy booth. The menu has a range of international cuisines, but the Thai dishes are sensational, and beautifully presented.
Service can be over-solicitous but you are made to feel very welcome. There are a couple of tasting menus (1600B to 2990B) and the Sunday brunch (1990B) is legendary among locals.