Cash is King
I realized yesterday that carrying cash in various denominations down to a dollar bill for dining is better than a credit card, if you are trying to avoid confrontation with entitled waiters.
Yesterday at a sushi restaurant I was neglected; waiter forgot to bring me a second serving of wasabi, nor did she come back to fill up my water. So, when the bill came (food + tax = $31.83), I put down $32 in paper bills and walked away, not having to interact with the machine, or him standing in front of me, or raising the specter of being scolded.
It felt good for once paying in cash!
Who else pays in cash to avoid confrontation when not tipping?