That's what I am planning to do, order online with delivery then go check out the store on launch day. No way I'm gonna camp out here though, it's already hitting 90 here in the LA Area in the afternoon and I'm sure it'll just get worse. Luckily my store is just down the street so it's not that far of a drive.
I just hope the carrier gets here early. FedEx usually gets here before 1PM even on launch day and UPS may get here by EOB on a regular day, if I'm lucky.