feel free to wow them with contactless payments

This is quite dated. Per Forbes, "Nearly 90% of U.S. consumers now use contactless payments, "

Tip at restaurants where they take your order at the table and bus your table, 15-20% of the total. Absolutely don’t tip at those kiosks at the counter. They’ll beg for a tip because software. You’re absolutely fine to hit skip or custom 0. Don’t normalize that shit.