First, be realistic.....just imagine how reps of Pre-Arrival Teams HATE this weekly task of room assignments and requests.
It's truly a tough job.
Now, here are my thoughts.....
Pre-arrival emails for preferences are now standard for owners who are occupying. Not sure about emails to traders or users of DC Points.
For you, a trader, don't wait for an email ----assume you won't get one.
Some say to call the resort about about 2-3 weeks ahead to give your preference, but I say call today,
regardless of how far in advance you are. They WILL note it on your reservation at any point.
Be reasonable....don't ask for "top floor, ocean view" (everybody wants that!), for instance, because as a trader you won't get it.
Just find out the building names or numbers, and ask for any of several in a preferred general area, not just one building or floor, etc.,
and for a middle floor with partial ocean view, but you can always add in a nice way, "if you received better you would not turn it down",
and let it be known by your tone that you are smiling.
Be kind, respectful, and fair, knowing they must adhere to their pecking order, but realizing that once in a blue moon,
you may actually get bumped up. It does happen. Good luck.