I called a week to 10 days ago and made reservations to arrive on Sunday telling them we would be with the Montana Rally. They said no problem and they will know our site numbers when the admins send them the site number list. Being the tiniest bit anal and OCD that I am, when we find out our site number I will call the campground back to make sure they have the same number and find out if we will have to move or not. At any rate, they didn't need anything from me but our name when I called and said they would know!