NC state parks now use RA. We think it works well and is a simple system. We like the fact that we can reserve the sites we want, provided we beat others to them. Here in our state, they charge $3/night for a reservation. So if you want to stay only one night, you only pay $3 for the reservation part. But if you want to stay a week, then you pay much more for the reservation privilege. Non-electric sites are $17, and W/E sites are $22. So you end up paying $20 and $25/night respectively. We always reserve W/E sites, so we just know it is $25/night to camp in NC parks. I do like having pictures of every site, as well a description of the length, grade, etc. We have a 26' TT, so we try to avoid sites that are steep up or downhill. I would have to go look at the site, but I think it is a flat fee of $10 to cancel a reservation, regardless of how many nights you had reserved.