Flying J's are always so packed and most of them are made where a truck has to back into the parking spot late at night and that's a good way to get hit plus truckers have to follow federal guidelines for rest and hours they can drive so at the end of their time they have to shut it down. If there is a RV parking spot open it's not bad at all. I saw a big truck looking for a parking spot in a crowded Flying J once block a couple of parked RV's parked in the big truck area, parked his truck and got in a car and left. When I left the next morning at 9 oclock they were all 3 still parked there.