
We used one for House of Blues at DTD a couple of weeks ago. I got it for a $1. We had do $35 worth of stuff...soft drinks, 2 lunch meals, and split a dessert. We still spent $19.xx. I want to say gratuity was included?
If a min. tip is required it will be spelled out on the certificate. Can be 15%, 18%, or 20%. Only problem I had was this was on a trip to San Fran earlier this year I used on for a typical small, funky little fish place far from SF. It inc. a 18% min. tip which the place, and the service, didn't warrant. But that was the only time I had a problem with the tip amount. The min. purchase requirement is before tip.