1st time renting RV - Any tips for a great family vacation?

Have EVERYONE practice taking "RV" showers and doing other water consuming things, I.E., brushing teeth, washing hands, etc., without using a lot of water. Running out of water will put a damper on an otherwise enjoyable time in a hurry. Your water supply is not endless and replenishing it means a trip to the dump station (that water went somewhere) and then to the potable water fill; unless you are hooked up to all at a "full service" campground.