as a European in the States, tipping's a bit of an issue. D. was explaining that, as a rule, most people (bartenders and others) added at least a dollar to the price to ensure they'd get what is considered a fair tip - nowadays, that's apparently about 20% of the bill! then we went on to discuss the reason for not including the tip in the prices, as it is generally done in Europe, at least to some extent. his argument was that if the tip was already included, why would the waiters, etc., give you good service? there was no incentive. a point that seemed fair until i thought about the general level of service during my ten days there. not great. generally not as good as service in Europe. for our dinner at the revolving restaurant, for example, the hold forgot us when the next table became available, one of our waiters clearly couldn't be bothered while the other kept forgetting stuff - D.'s sauce, A.'s tea, C.'s water. this was apparently made up - in his mind - by joining our conversation just as i was about to pay, making a comment that apparently linked my point to his name. the type of comment that makes me cringe by its total fakeness. generally, service seemed to be restricted to people talking to us like we were family friends, making small talk instead of doing their jobs. as far as i can recall only the waitress at our very first dinner had actually done her job well. so no, i don't agree with that point. while tips are included in Europe, good service will generally lead to extra tips.