Many of the areas in the paddock have electricity, but I'm not aware of any other RV hook-ups (and I'm pretty sure they don't have them). Many drivers bring their RVs and stay in the paddock, so maybe some of those folks will let you know how they do it.
I use my RV at the track. There is 15 amp power around the back perimeter of the club pits and also around the pro pits. You may get lucky and get a plug but half of them are broken. Be sure to fill up with fuel before parking because it is likely the generator will be running at least part of your stay.
Steve