Originally Posted by
dwbf11
Do I need to call Marriott to link the reservation with my account, or will it just happen at check-in?
Also, any chance of a room upgrade? Kicking myself now, since the Marriott rack rate is only $20/more per night

It will happen at check-in. Just give them your #.
Upgrade chance depends on how full the hotel is, how many elites checked in before you, how long your stay is, etc.
You SHOULD kick yourself if the rate dif btwn PL & Marriott was only $20
Cheers.