Yeah, I dunno what's going on. They might be trying to entice people to go digital, but this would be a wrong way in going about it.
I might try and see if BB can change my LCU order to in-store pickup, although I got my copy of MH3U today (from the same order) so I might not be able to.
I can say that MH3U has A TON of improvements over the original, particularly the way you enter online mode, and how you can play the online specific stuff offline. So unlike Tri, when the servers go off, that content will still be available.
It's worth giving them a call... the other part of my order was ME3 that I got shipped to me over a month ago. As long as the store has it in-stock, it shouldn't be a problem.