Brian will be at Vintage Vinyl in Fords, N.J. on Feb. 10 at 2pm for an in-store appearance. If you pre-order either the CD or vinyl of Sleepwalkers from the store, they will send you a wristband to attend this event (while supplies last):
Vinyl order - http://vvinyl.com/shop/FALLONLP
CD order - http://vvinyl.com/shop/FALLONCD
You get one wristband per order and only people with wristbands may attend.
I went to this for Jimmy Eat World and they did about six songs, acoustic, for 100 people or so. The store is pretty big, they do this all the time and it was very well-managed. Afterward we were given a 45 from the album which the guys from the band autographed to your liking, and you could get your picture with them if you wanted to. Can't say for sure if this run the same way but it seems to be the norm.