Smoking locations aren't much of an issue, they are scattered all around the resort anyway, but don't really effect rooms at all. More of an impact is that some of the nicer benches/etc around the resort and the river side have now been designated for smokers, making those areas less pleasant for the rest of us.
Oh, and buildings 90 and 95 (Oak and Parterre) now exclusively contain Royal Rooms, so you are much less likely to get them by request if you have only booked a regular room.
Didn't see any for the last two weeks (just got home).
See
http://www.portorleans.org/room-requests.php for lots of info on making room requests.
Unless they happen to give you a free upgrade though, you will be in different buildings (Magnolia Terrace for you and Oak Manor for your mom would be the closest options). Make sure you have your two bookings "connected" on the Disney system, and just request to be located as close to each other as is possible and see what they can do for you.
Andre