Not all Flying J's are equal. Pick up a location map at any flying j for all their locations and additional information. Handy while traveling. Same information is available in their website. I have never seen dedicated rv parking. I thought it was for large vehicles. We like to park a long the curb when available, to put out the bedroom slide.
Apply for the RV card online at their web site, and you'll receive it faster. Use it for everything you purchase at a flying j. We got $3.00 off dinner last week.
Be curious when fueling. If you have to pay inside, pull out of the island, and find a parking space, and than go in and pay.
We have never been bothered by truck noise or shady people. I feel safer in a flying j, than in other public places. Remember, they might be public places, but they are private property.
Barb
WHR Casa Grande, AZ