Counterpoint on RV centered "campgrounds": they have sweet amenities like a grill, a pool, laundry, and often a building with some air conditioning and some books previous guests have left behind.
Not an every night kind of thing, and you're unlikely to find much in the way of grass to put a tent on, but I stayed at one with another guy who was bike touring and we get like kings for the night.
When you're digging holes in the national forest to shit in, it doesn't take much!
I have fond memories of the KOA in Klamath Falls from two bike tours that went through Crater Lake. Last time I was there we had just finished a section of the trip that included a 90 mile stretch with no stores or even a lot of water for that matter. There were hot showers, washing machines, a camp store that sells beer. The camping spots were pretty nice, too.
And there was much rejoicing.
I hate on KOA and other RV places because I think the comparison between that and a state site is pretty stark. Early in my longest tour I was attracted to that type of convenience. But I've never found myself using the pools, grills, or books. (do you really expect to find a good book in an rv campground? come on.) I'm more concerned with doing the same thing I do at every other site like cooking and setting up the tent. Usually the experience costs $70-80 for a not-very-flat site with no discount for tourers. I find the check-in, check-out, and travel around a sprawling campground to be pretty onerous and time consuming the next day as well and I get a 3+ hour late start. Not to say that all those amenities aren't nice, but you can get most of them at a state-run campground, which actually tend to have way more space between campsites, prim sites, sometimes even awnings to sleep under so you don't get a dewy tent. And to be honest, RV park workers are totally bitchy compared to the state park folks, if you even have to talk to them, because a lot of state/national sites just let you drop $10 cash in an envelope.
Overall I found it to be a net negative to stay at an RV park. RVs produce a lot of noise, almost on the level of night in a major city. At home in an RV, people stay up 2-3 hours later than you do on a bike tour, and they run tvs, ACs, generators, and make excess light. The last straw for me was when our "neighbor" for the night was yelling foul, abusive things at his wife. And those bathrooms... sometimes they are a real horror. Keep your boots on.
Those types of experiences are really yours for the taking for little to nothing when you tour. Toilets are so easy to come by. Showers, too, for the price of a $15 day pass at a gym, but you can also just sponge bathe in the handicap stall. I would stop in a town and get some mcdonalds, eat it at the laundromat, hit the post office, talk to bums on the street. When I wanted to swim I'd just find a place to swim. That stuff is the real gold, being resourceful and a massive cheapskate somewhere you don't know anybody.
On top of all that, you can just sneak on to the RV park in the morning if you want to.
> Counterpoint on RV centered "campgrounds": they have sweet amenities like a grill, a pool, laundry, and often a building with some air conditioning and some books previous guests have left behind.
... and showers.
Hot showers too! And 1-800 phone numbers. In my motorcycle touring days, at 3pm or so I'd figure out where I would be at 7-8pm, lookup the nearest KOA in the KOA directory booklet, and call the 1-800 to make a reservation. Often when I arrived, they were turning away unhappy would-be campers as all spots were already taken.
I've been turned away a few times. Real campers (not people on an 800lb hog or hauling a 3 ton tiny home doing 7mpg) are using a tiny fraction of the total area and all that space is wasted. they could be making more per camper per night by splitting camper sites by making small footprint spots where they otherwise couldn't put a car site. This is what a real campground spelled with a C does.
These days the trick when motocamping in the east is to look up the KOA location, and then check the rate at the local campsite across the street or down the road.
Out west of course you usually have free options.