The forum regulars frequently advise to “keep checking” when someone is trying to secure lodging at the National Parks, and they are right. Last August we scheduled a 2-night stay at the North Rim, for early June. This was 10 months in advance, but I could only get a “rim view” cabin for the first night, so we settled for a regular western cabin the second night. I’ve been checking the reservation website 2-3 times per day ever since, and just now scored the second night in a rim view cabin – 12 hours before we leave on vacation! We had similar luck with our Bryce reservations, started out at Tropic, but after months of checking a cabin finally opened up inside the park. Keep checking!