Circling back to this post.
I have concerns about the hard opening time. It doesn't make a lot of sense to me. For one, with the shortened hours, knowing I can deduct another 20-30 minutes off the time I am paying for is a bit of an annoyance, but just that...an annoyance.
However, logistically, it doesn't make a lot of sense either. By opening the park 20-30 minutes early and allowing people in, it only spreads out those entrances and helps for social distancing. Maybe you only let in 50 people every 5 minutes, then once they get dispersed, another 50 people, and so on. By keeping everyone at the gates until 9 am on the dot, it creates an even bigger logjam than would have been there if you just started funneling people in a little at a time.