Okay I talked with our store people, and long story short, things have been a bit backed up thanks to Disgaea 4 and Bleach preorders both being run at the same time. So the staff is doing their best to catch up on all the mails.
In the meantime, our policy is if you preorder from our store, we will ship the game out early so that it ideally arrives on the release day, or at most a day later. The faster shipping method you choose, the higher guarantee you have of getting it in the mail on release day. With the free shipping, since the games are shipping from a single location to reach everywhere in the US, we can't guarantee the game will arrive same-day, but that is our intention with the preorder system.
As for our shipping methods, they're listed out in our store FAQ and are as follows:
USPS Standard shipping : takes about 5 – 7 business days. (Free + Tracking)
USPS Priority Mail: 3-5 Business days (Tracking)
USPS Express Mail: 1-3 Business days (Tracking)
Since our store staff is a little backed up, if you guys have any more general questions (i.e. not account/order-specific) I'll do my best to help you out, either here or via PM.