From a consumers' aspect, yes, but from the employees aspect, no.
They're essentially screwed out of the deal unless they get to work on busy nights - which means killing yourself with stress. I've worked as a waiter, so more money means more stress in that industry - that's not the same in all industries.
I pay 20% on principle. If you've worked as a waiter or have a close friend or relative who works as one, it will change your perspective a bit.
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