No smoking in RV. Black and grey water tanks need to be emptied prior to return. RV needs to be returned with the same amount of gas it had when it was picked up. Late fee of $20 every two hours if RV is dropped off more than two hours later than the pick up time. I give a two hour window, so if you pick up the RV at say noon then just like a car rental if it is returned later then noon on the return day , there will be a fee but I won’t charge that fee unless it’s been two hours beyond the pick up time.