Oh, and as Dave will tell you, the extra tip to your "chosen" bar's crew always helps with the service.
Yes indeed. I always take care of the staff at a couple favorite bars on the first day so they remember me - and my family. Vanessa doesn't get the soda card but on more than one occasion she has gotten free sodas because she was with me.
We get our son the soda card for convenience (plus he guzzles the stuff like water). Since we tend to hang out at the same places, those bartenders and waiters know me and therefore know my son, so he gets his Cokes with speedy service.