IMHO, we're not seeing as many RVs on the road for two reasons. First the price of fuel. Second, many of the RVs purchased in the past two years were sold to newbies.
We've been on the road for more than two months. Started in May pre-summer vacation. Usually, parks had limited availability. But that had to do with the high number of permanent residents. I'm making that assumption since normally you don't see huge 50+ gallon propane tanks sitting next to the RV. Actually that has been the case in every park we've stayed at. More and more permanent residents.
Public parks generally were almost always full Friday and Saturday and other than for one-off spots when we were lucky, it was one night and go. Other than that, based on the luck of the draw, we'd get another night or two because of cancellations. This has been true since we started early May. Since summer vacation began we don't even look for a spot at a public Campground. At least not those with ANY kind of attraction.
From the looks of the many brand new travel trailers and based on their typical starter type maneuvers, brand new campers, with in-State license plates, I'd say one of the reasons we're not seeing many RVs on the road is because they're not traveling far to spend the weekend. This is partly due to their age. Most are younger RVers with children. So most likely they're back home on Sunday evening and back to work Monday. If true, fuel and cost of camping is only a minimal concern.
For us older long timers, it's a different ball game. Takes a bit of planning compared to the carefree style of two years ago.
I totally concur with the above comment about boon-docking. I hope these newbie RVers don't discover that for a few more years.
2005 Pace Arrow 35G
2016 Jeep Wrangler JKU Willys trim