Its a walk in and buy. However since the iPhone 6 and iPhone 6 Plus are becoming harder and harder to purchase (online and in store). There could be some lines outside carrier stores. My experience is with Verizon Wireless only and the Note II and Note III were able to be purchased the day of release. I would expect the same for the Note IV. Pre-order now is pointless since you have two weeks left and pre-orders or probably shipping past the Oct 17 date. Verizon Wireless has ship date of Oct 23, AT&T has ship date of Oct 14, Sprint has date of oct 17.