Please can you tell me whats in the grandstand..bar/food, toilets etc..?
Nothing is "inside" the grandstand apart from somewhere to park your backside.
The usual fare of food and drink will be available close by..........at a cost.
The best bet is to take a stack of beers in with you, ideally in a soft insulated bag. This, as opposed to a big cold box.
The cost of the grandstand ticket, gives you a seat. That's it. And access to seats in other grandstands a couple of hours after the start, I believe.