20% as long as it's decent service. One thing I've noticed is that my wife and I get a lot better service now, when we were in college we'd usually get neglected by our server for bigger tables or older people. I think most servers would just assume that since we were college kids we wouldn't tip well, then they'd give us terrible service, so we'd end up not tipping well (10%-15%). Terrible cycle really, but even in college, if we got decent service I'd tip 20%.
BTW, servers don't make minimum wage, when I worked in the service industry they made b/w $2-$3 an hour, their real money comes from tips so don't be greedy, also, some of that money goes to the hostess and bus boy.
Currently Playing: Saints Row 2 | Battlefield 2 | Company of Heroes
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