There have been at least ten occasions where we've been slightly undercharged on a restaurant tab, usually on items like soft drinks or an extra glass of wine. My husband, being a scrupulously honest soul, will tell the server, who will then amend the bill. Not once has anyone ever said "oh, thanks for telling us, it's on the house." Not exactly an incentive to keep being honest other than husband's conscience.
What's your experience?
Servers, any thoughts or input?