First post!
I haven’t competed there -yet-, but I have been up there several times to watch their Grand Prix’s since I only live 45 minutes away. I can say that the facilities are beautiful.
The horses have huge stalls, there are designated areas for muck-dumping, there are plenty of wash stalls(not sure how many exactly but I know there are a lot). The horses never have to walk on concrete unless they are walking in the barn aisle ways. The footing actually does have a good amount of give, at least from what I have seen. Also, there IS a hand grazing site, too. 
One issue that kind of bugs me, however, is the parking. It’s kind of awful right now. But, it’s free. I hope it stays that way.
Remember that they had a $100 million “budget” when they started developing this place, and they are making money off of it already, even though it isn’t finished yet. Any kinks and issues will hopefully be worked out with time. The area will benefit so greatly from this center. I believe it already has. Either way, it definitely puts Tryon back “on the map”, so to speak.
Let’s hope the Tryon International Equestrian Center will age like wine, and not milk. 