It is actually two months, not 60 days, but there is no +10. So, if you are going on June 1st, you can make your reservations on April 1st (don't have to wait until the 2nd), but if you are going multiple days and want to book on the 1st day possible, then you will have to call back daily. That's what I did for Christmas. I started to see it as part of the planning fun (otherwise it would have been a bit irritating, lol).