I just noticed that most of my earlier post got chopped off!
ls1222, I agree with safetymom, you are fretting over nothing. Please, please relax. I fly weekly and I've never had my seats changed on me. You hear about it on these boards bc of 2 reasons: 1) people here tend to be a little, um, how do I say this nicely, obsessive maybe (?) about their plans and 2) people here tend to make their plans very far in advance. When you do that, you are likely to experience the airline changing your aircraft which will change your seats. Since you are now within days of your flight, this is very, very unlikely to happen now. As for the elite seats, please remember that loads of "non-elites" get elite seats. Many times there are not enough elite flyers on a particular flt. to fill those seats, but of course they don't go empty! There is no particular way that elite flyers look or act. If you saw me traveling with my DD9 & DH and we're all in our shorts and DD has her nose in her GameBoy and I'm reading my book, and DH is snoozing, would you know? Nope!
A very wise woman on the cruise board once said "none of things I worried about occurred, and all of things I never thought of did." Moral of the story: focus on having fun, and controlling the aspects of your trip which are actually within your control. You are going to have a great time!!