--> Sign in to your owners.marriottvacationclub.com account
--> Click on "Education & Owner Resources" above the picture
--> Click on "Helpful Tools" in the column on the left
--> Click on "When Can I Reserve?"
* If booking owned Week(s), click on "Using My Week" --> select the resort, then input the desired check-in day and the fields will populate with the Inventory Release Dates for both 12- and 13-mos Reservation Windows
A single Week can be booked instantly online at the 12-mos window. Multiple consecutive/concurrent Weeks can be booked at the 13-mos window but require a call to Owner Services.
* If booking DC Points (either purchased Trust Points or Exchange Points from enrolled/converted Weeks,) click on "Using Vacation Club Points" --> input the desired check-in day and the fields will populate with the Inventory Release Dates for all Reservation Windows (13-mos, 12-mos, 10-mos and 60-day)
All DC Points inventory can be booked instantly online.
All inventory is officially released at 9AMeastern but it's possible that DC Points inventory will come online shortly after midnight on the release date. If booking holiday/high-demand inventory it's strongly suggested that you be ready and waiting at the release time.
Good luck!