Comment by plantwallshoe

I’ve implemented a personal policy to make it easier for myself and reduce bias:

Full waiter experience (seated, handed menu, food brought to table, plate cleared) gets 20%.

If the level of service is less than that, the percentage starts to go down proportionally.

Counter service is flat-rate $1 per person served.

This is the same every time regardless of quality of service (unless something truly malicious happens, but I’ve never experienced that.)