GordonThree - This is just a wild guess, but the current system only takes "site specific" reservations through a certain cutoff date. After that date the default is to show all sites as "unavailable", because technically at that point no site can be reserved by site number. It becomes first come, first served.
I ran into this before trying to reserve the same site for 2 weeks. It kept telling me that my site was only available for a part of the time period I wanted. So I tried another site, and got the same answer.
Eventually I figured out that none of the 160 or so sites were available for the full two weeks because the last three or four days of the 14 day period I wanted came after that cutoff date for site specific reservations.
Again, just a guess.
