First, Melissa, what a beautiful family you have! And congrats on your newest addition.
It would probably be better to have the person you rented from to make your room requests. This really shouldn't be a big deal, it is pretty standard in renter deals. As far as doing something special for special occasions, I am inclined to say you don't see that in the DVC resorts, however.... when we rented points a few years ago a little bird (not us) tipped off the staff that we had an anniversary and birthday in our group and we got a special something. Maybe it would be best to mention it on check-in rather than have your renter do it.
I stayed at BWV, in a preferred studio, on rented points, three years ago. It was really very lovely. Being on the Boardwalk was great, make sure you take advantage of the Boardwalk Bakery... cinnamon rolls, chocolate croissants, mmmm. The pool is really nice too. The best is being able to walk to Epcot and MGM, we never bothered with the boats.
Enjoy this lovely resort. The BWV is a lot different from the more enclosed, self-contained resorts-- you really feel right in the middle of the action. It's great to take the kids on a nighttime before-bed stroll on the Boardwalk.