At a restaurant, you can ask "I would like to order please" ("tha ithela na parageilo parakalo"), but at a bar or cafe, you would say, "I would like a glass of" ("tha ithela ena potiri"), followed by "water"("nero"), "coffee"("kafé"), wine ("krasi") or "ouzo," which is a Greek liquor. "Cheers," which is always good to know wherever in the world you find yourself, is "geia mas!"