Thanks for the replies! It sounds like my tipping in the PC is in line with what others (who tip) do. I will continue to tip the bartenders and not worry about the other staff. I often order a drink that has to be mixed and I find that they put effort into doing it well -- a bartender can do a bad job on this -- make things too weak, etc. As for the tipping culture in the US -- well it is the norm that has developed -- and I'm ok with it but I think that that cultural issue is something that is probably beyond the scope of this forum! But IMO in most countries that I visit where tipping is not a norm, getting good service of the type I find normal in the US is a rarity -- this is particularly true in European countries where you can wait forever for service which is paltry at best and those self serve restaurants in the UK are the pits. The big exception here is my experience in China and Japan where tipping did not seem to be expected yet service was extremely good.