With Record Rv Sales 2 years in a row, we'll need more sites

We are currently traveling east on I40 from Calif to NC. After 10 years of fulltiming this is the first year I have had to make reservations in advance. Normally I call the campground that day to check for availability but after having the first two places I normally use tell me they were full I started making reservations at least a week in advance. We are seeing more rigs on the road and all the parks have filled up at night. Hope people get tired of their rigs and park them soon.