I am traveling for work, with a reservation for 6 nights, but have friends coming in the final 3 nights. I booked all the rooms, one for 6 nights, and two additional for 3 nights at the same hotel. Will I have any issues with the reservations within the Marriott system? Will I have issues earning points on all three rooms? Lastly, if I booked the 6 night stay at a different Marriott hotel, would there be any system issues when I go to check in for the 3 night room?