We have a total of 5 reservations (we're staying at multiple resorts to try them all out). The first reservation is for one night, followed by 5 nights, 2 nights, 5 nights and 1 night. I was able to make ADRs for our first 10 days (which includes 4 reservations) at my 90-day mark. I did have to log on for the next few days to finish up our 14 days worth of ADRs but my 10-day booking window did open with that first, one-night stay.