Michigan International - Graves Farm
This was our first event at MIS and at Graves. Yes, the campsites can be unlevel. Ours wasn't too bad, although our front tires were off the ground when leveled. I would guess at least half of the sites were vacant. We were in Section B Row A electric. The sites were around 25' X 50', and if you're in the right spot (which we were) and had enough hose you can refill fresh water easily. We checked out spots for future use, and there are plenty of level ones. Row A was plenty level for us. Some rows toward the back did get worse.
We used the trams on Friday and Saturday, but walked to the track on Sunday - which wasn't bad. We were in section 34 row 53 at the top. What a view. Rather uneventful race except for the last lap.
Hope this helps.