What they should do since you bought it from BB, is put the stand on it and place it on a Table or cabinet. They will not wall mount it. They will do a bit of setup for you while they are there, like Hook a Coax to it and Auto run the channels, set the time zone small stuff like that. They will not hook up all your Satellite equipment and DVD players. You can of course get anything your willing to Pay For.
The good thing is you bought it from your local BB and nothing can be wrong that they can't make right in a short amount of time.
The one thing I can recommend is before they set it in its place or turn it on, take a flash light on the Black screen and shine it at a angle in a dark room or area.. Go left to right and then right to left slowly. The go Top to bottom and then go bottom to top. What your looking for is something that looks like silver thread flashes or a single strand spider web in the glass. If you have any they will show up as Flashes. Indicating a Micro Crack that may not be seen any other way or at just the right angle.
The other thing is never use anything to clean it with other than a Micro Fiber cloth and Bottled or distilled water. If you reuse the micro fiber cloth later after you wash it. Do not put it in the dryer with a fabric softener sheet or you will have a serious smear problem on your screen. Never Ever use any type of Cleaner, I don't care what the cleaner says on it. Some cleaner's will look really good the first 10 times and then you find out you are slowly removing the film coating on the screen and later in a few months you will have smears you can never get out. Don't even clean the trim with a cleaner.
One last thing Never go into the service menu I don't care what you read on these boards. There's just No reason too.
This should get you started. More later.
Nothing's Perfect So Stop Expecting It ! Glenee