When we were on the Free DDP we had no regress when we had a bad server.Leaving no tip was imposible.Wouldent it be better if on the check before you give them your card they had " rate your service from 10 to 1 " .where 10 was outsdanding and 1 would be crap.The pints would be scored througth a shift and top markers would be rewarded and poor performers.encuraged to get better scores.I Would still tip oop for good service.Just a thought
Paulh
Paulh