Out after a Friday baseball game with another couple, we were loaded up quite well and the ladies decided Amsterdam was the logical place to go. Of course -- Cooperstown, Dbacks, Amsterdam! Being in my fan gear (Sedona Red jersey and slip ons), I was somewhat hesitant about not being 'hip' to their 'vibe' at Amerstam. Then Jenny reminded me that Charlies had charged her a cover but let me in for free, so I was sold.
We arrived about 9pm and the doorman was very friendly, asking about the game and checking our IDs. We spent most of our visit on the spacious patio having drinks until hitting the dance floor and leaving. As others have mentioned, they seem to not stock some typical ingredients (we had a round of white russians with soy milk) but, as an adult, I'd use this as an opportunity to try a different take on a favorite or something new altogether (we had absinthe -- it was gross and I felt like crap the next day).