Value season (Fall and early winter) are considerably less expensive, if you have AAA you can also get a 10-20% discount though there is an allotment of discounted sites and if they're gone you won't get the AAA disc. If you can't get the dates you want trying, reserve a larger block of days , and call back later and cancel the days you don't need (say you want 5 days but they say there is no availability, try reserving a 14 day block containing the 5 you need). Partial sites have water and electricity and are cheaper; it's an acceptable practice if you have a tote to dump at any open full hookup site. Parital sites are supposed to be for popups and tents, but lots of people with smaller hybirds are allowed to reserve there; although with a 3326 you might be pushing the envelope. A real good resource is
http://www.disboards.com/forumdisplay.php?f=24