My sense of humor is telling me I should pick up Cave Story tonight with all the hardened FPS fans out there... but my sense of avoiding crowds tells me I should wait until the morning. Either way, I'm getting a kick out of NIS America's awkward timing.
It is entirely up to you. If you want the game that badly I say go for it. I was going to get MW3 at midnight, but I figure I can wait a bit longer as to everyone else.