Yeah as a local who camps at the Fort frequently we have learned recently that we need to book all the trips we want for the entire year as soon as we can. Worse case scenario we cancel the trips we decide not to take (which never happens ) however we learned many others do the same thing with some of them canceling. Plus there are several “travel agents “ (quotes intentional ) who book up sites as soon as they become available .. it’s crazy .. we learned that recently with how at 499 days out Halloween week in 2020 was booked up in seconds . Very frustrating and disappointing