To add my two cents to all the excellent advice above, the two lane traffic into and out of the world’s biggest aviation event is a spectacle unto itself. I’d be there as early as practical and stay until an hour or so after the airshow ends, 7:30 or so. You won’t be bored. If I needed to leave earlier than that I’d be gone by the middle of the airshow. In-house busses can get you to the museum and seaplane base.
Welcome, and have a blast!