We ended up here because we couldn't get reservations a CPH until 9:30PM. We arrived right at 7pm when they opened and checked in with the hostess at CPH. We were almost immediately brought up through CPH (not through the back like many people). I agree with other reviewers that this really is best for a smaller (4 or less) crowd.
Our group had a bunch of different cocktails, but the all around favorite was the Gin and Tonic. It was absolutely delicious (and I don't even really like liquor). The prices are quite expensive for a cocktail, but we got two full drinks out of the Gin and Tonic, so it really wasn't that bad. It did take a while to get our drinks because of the long preparation process, but we didn't really notice that much as we were caught up in conversation. A few of the cocktails had really cool presentations that made it an even more fun experience.
I will definitely be back - I thought the experience and the cocktails were worth the price. Just a tip - they also serve the full CPH menu, so if you can't get reservations there, go to Citizen R+D and just spend your evening there.