Two things that are still not clear to me. If I have an existing reservation at 11 mos, can I purchase points at 7 mos mark to link to an existing reservation? Like if I want to add one more day to my reservation, I don't want to check out and back in for that one day. Also, if I have a few points remaining in my UY, but not enough to make a one night reservation, can I purchase just the points I need to ADD to my remaining points and thus make a reservation, at the 7 mos. mark?
My understanding is yes to all the above.