Great question — answering as the UphillTech team:
Tipping culture in North America is a nightmare. It's important to remember that all tipping is optional, and there is no "correct" amount to tip. At best there is a "normal" tip (i.e. what most people tip) which is made more complicated at one end by the restaurant industry constantly publishing articles trying to convince you that you "should" tip very highly, and at the other by the much-publicised fact that many wait staff don't get paid much and rely on tips for their income. (It's true of course, but restaurants will try to convince you that it's your job to make up the shortfall in the wages they are paying their staff). If I rented a booth for $100, and during that time a waiter did...
Full answer by DJClayworth: https://travel.stackexchange.com/a/177818 (CC BY-SA 4.0).
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