I purchased 2 of the Groupon packages for Geo's.
My first experience was so bad that I didn't go back to use the second Groupon. I arrived a few minutes before friends of mine, so had a drink at the bar. I told the bar tender about my groupon, which he used right away. The problem with this was that the pool tables were full all night, so I never got the 2 hours of pool that I paid for.
It wound up costing me more money, since the appitizer and pitcher of beer were cheaper than the $15 Groupon.
When I asked the bartender if I could just pay for the bill without the Groupon, so that it wouldn't be wasted, he told me no.
I let the second Groupon for Geo's expired the other day, and I have no regrets about it going to waste.