[quote name='zewone']Yes, I think you can keep them by starting a New Game+ though.
I could be mistaken.[/QUOTE]
From what I've read on GameFAQs, no your S. Link level doesn't carry over, but if you max the S. Link out, that will carry over. Also, there is a Max Social Link FAQ on GameFAQs. A quick glance at it seems that in order to max everything, every action of every day is going to be spent doing something to achieve it, so likely no screw ups.
[quote name='Kyo']Will this game be rare? When I picked up my copy of Persona 3, I ask him if he had any more left and it seem that they only order what people reservered, plus 3 more.[/QUOTE]
I'm thinking that it will, almost every GS/EB is sold out or close enough to it around me. I just picked up the last copy of it from an EB to send to my brother. Figured he'd like this game.