Came here to say this. We go straight from the park and back and we may be a little wet from Grizzly if it is summer. They are used to/expect it so don’t worry.I wonder if I saw you there on the 14th.
If you want to dress up, go for it but if that's not your thing, you won't feel out of place. I've only ever gone in a t-shirt, shorts/jeans & sneakers because that's all I have/wear.
Prices are definitely higher and the menu smaller, but our food & service have been excellent each time we've gone.