I attended Seinfeld on this amazing Arizona evening. Parking was pretty easy across the street and north of the theater. The check in process was seemless and once in the venue the seats were easy to get to. Someone was in my front row seats but they moved after being asked nicely. The show was amazing and Seinfeld proved once again why he is the king of comedy.
The only negative was the seats; hard and harder. It was not at all comfortable sitting there thru the show.
On another note after leaving the show it was impossible to find any restaurants with less than an hour wait so we had to flee the downtown area. If planing on eating downtown make reservations well in advance and be prepared to hear that many restaurants don't accept reservations downtown.
Enjoy the show!