I have a question about the promo and wondering if anyone has experience with this before. For an upcoming trip I will be booking two rooms (one for my family, the other for my mother). I am debating two possible ways to book / use points and have some questions about them:

- Scenario 1: One room booked entirely with points and the other with cash. At check-in, do I simply need to ensure that my benefits (currently platinum) are tied to the room paid for in cash to get the double night credit? Is there anything else I need to do to ensure they don't mark me as staying in the "points" room?

- Scenario 2: For an 8 night stay, assume I make two separate bookings. One for the first 5 nights under points (to get the 5th night free) and a second for the final 3 days in cash. Given the final 3 are in cash, would I still get double credit for the final 3 nights or because it is a continuous stay (but with two separate reservations) Marriott would count the entire stay as cash and points?

Thanks for any help