I just Stayed at Waikoloa Marriott Resort and Spa on the Big Island Hawaii.(Love it)
Book both rooms through Vacations By Marriott. Iam told I can't get the rooms as Elite nights but I did get points. One was book for 8 nights the other for 9 nights.
If this is because they classify Vaction By MARRIOTT as a third party then they need to tell people. I was misled to believe that these reservations would qualify as Elite nights.
After all ,Vactions By marriott is found right on the rewards web page!