Too many commercial campgrounds will run their WiFi off a business DSL line that only has 12 mbs or worse 8 or 6. This is especially true in rural areas where data services may still be limited.
Then each campsite has at least one device and frequently three or four. And if even a couple of those folks hit YouTube or Netflix and then whole system is toast.
I don't think I've ever had good WiFi at a campground and that's usually just fine with me.
We now spend 4-5-6 months at a time at a campground. Internet is essential to us as we have bill paying... and I need stock market access (to pay for our outings). So, an internet connection is a top priority to me. Most of the campground people are seasonal and they need only basic internet access. Luckily, the CG we are at has 7 AP's and each has 20Mb capabilities. Come the holiday weekends, I do not even try to get on the system. I am working with him to set the main router up to block the Netflix, Apple.... and other streaming sites, that bring the system down to its knees. More and more campgrounds are taking this approach. Also limiting MAC Addresses up to 2Mb streaming rate also.
If I want to watch a movie, I have just under 200 movies that I copied from my home collection to a 2Tb hard drive, plug in the RTaspberry Pi to the TV HDMI and the hard drive and watch them.
When traveling, we would get to a CG and I would select the AP that had the best signal with the least number of users. Currently, with this unit I get 65Mb (between the AP and my unit), without it inside the TT the laptop only gets 3 to 4Mb and the connections drop constantly.
Never had this data issue when all we had was DOS!!!!