Beth - I sympathize. I have the opposite problem. I've decided I need to leave a day early and break the drive back to Spokane into two days.
So I need to get online and cancel Monday night. It'll cost me $8, but the way I read it, I'll get a $20 refund. Then I need a spot halfway home, and I've identified where, the same place we're staying on the way down, the Milo McIver state campground outside of Portland, but I'll be gosh-durned
if they're getting another $8 fee PLUS the overnight fee. I figure I'll just show up and see what's available and pay the person at the gate.
Karen, am I being naive? It'll be a Monday night after all.