180+10 means you can book ADRs 180 days before the start of your trip and for the next 10 days after. So if you're going for less than 10 days you can book them ALL at the same time instead of having to call or go online every day like non-resort guests do.
If I check in on the 29th of Sept. 180 days is April 2nd. Is that when I can start booking? Then since I will be there 9 days I can book my whole vacation and not have to wait? ......oh I think I just got it!!!! I think I just had to type it out!!!