I was able to snag a reservation for a preferred site for 7/2-7/4, but I am hoping to add the night of 7/4 and checkout on 7/5. Knowing this is busy time at the Fort, what is the best way y'all have found to be able to get that additional day you are looking for? Would you use the "Change Reservation" option or just keep trying to search for the one night as if you are adding a new reservation? Thanks in advance!