Finally got to attend this performance on 7/4 night. Everything went really well, from ticketing, to supporting services, to reminder, to parking. We arrived about an hour before starting, and the crowd was light. Venue was well organized and maintained very clean. Staff were nice and welcoming. We settled in our seats easily, and enjoyed the performance and firework!
The worst part of the experience happened after the show finished. We parked by a sign, so it was not difficult to find our car in the huge parking lot. But there was almost no one directing traffic to leave the parking lot. Try to imagine when almost the entire audience needed to leave at the same time, it was nearly impossible to move - our car, among 30 some other cars, practically could not move an inch for 30 minutes. That was a horrible experience.
I hope the organizer can reconsider the traffic flow based on the design of the venue. Also consider after-show entertainment to attract some audience to stay behind, rather than having everyone leaving the venue at the same time.