We used the valet park and it was very easy dropping the car off but left at the same time the concert ended so the pickup valet line was long. There was also a country western singer putting on concert that added to the crowds. We went on a Friday night and it was really busy. Mystic Lake Casino is located a few miles south of Hwy 169 and Canterbury Horse Racing Park in Prior Lake (although it feels like you are in Shakopee).