We have stayed at the track and there are honey wagons and water trucks that drive around to service the RVs. We used the track's mobile showers so did not have to refill our water tank and so do not know the price. We did use the drive up septic truck service as we were leaving on Monday morning which cost $35. If you call the track to make reservations, you can request the family lots which are closer to the track entrance. They are very accommodating when you call and if you book early you may request certain lots. Once you are assigned a lot, it is usually first come first serve and they park you as you enter the lot one right after the other.