We travel every month of the year for both business and pleasure with our 37 ft RV 5th Wheel. We normally put on enough RV miles, over 45,000 miles last year, that our fuel cost is sometimes over $800 per month with our RAM 3500 pulling our Monty.
Most of our meals are prepared in the Monty although sometimes we do eat in a Truckstop Restaurant. Most TA's, Pilot, Flying J, etc., do have "sit-down" restaurants, while others such as Loves, Marathon, etc, have fast food places. Truckstops have greatly improved over the years and most now have every service needed by traveling RVers.
Since we have been Life Members of Good Sam for many years, I almost always stop at a Flying J or Pilot for fuel at the Special RV Pumps. This way we always have plenty of room to get in and out, plus I always save 8 cents per gallon for the Diesel fuel. Also the FJ Truckstops all have a parking place for RV's, usually in front of the store-pump area for even over night. Many other Truckstops also have an area in the main truck paring area, often away from the Semi Truck area, where RV's are welcome to park over night. We use these often for just an overnight stop.