I give more than 15% normally, depending on how much the bill is. I never give less than 15% unless they're just extremely rude to me. I won't leave anything at all, if they're rude.
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Phi Sigma
Biological Sciences Honor Society
“Daisies that bring you joy are better than roses that bring you sorrow. If I had my life to live over, I'd pick more Daisies!”