As a retired IT professional, I use a Nanostation Loco M2 to pick up the park wifi, which is always in the 2.4Ghz band. As a post above said, although there are 11 channels available, only three (1,6,11) don't overlap. Then I use an internal Netgear router to broadcast my own internal wifi in the 5Ghz range.
The 5Ghz signals don't like to go through walls and have a shorter range than 2.4Ghz, so it is perfect for an internal network. Also, using 5Ghz guarantees you won't interfere with the park's wifi. It's too bad more people don't do it this way.
I use an app called "Wifi Analyzer" on my Android smart phone to look at channel usage when I pull into a new park. The typical park has the park access points all on the same channel, then the campers have repeaters all over the 2.4G band, causing all sorts of interference. The 5G band, on the other hand, is usually empty or mostly empty.
If the wifi or the Internet connection it connects to is bad enough, I just turn my phone into a hotspot and bypass it completely.