how close to you want to be? if you want to be up in the front I think you should get there the night before
Best Coast opens and they're great so watch them anyways.
FREE ENERGY are opening for both NY dates, yo.
I haven't gotten around to checking them out, but from time to time I read some of their press releases and they seem to be gaining some indie buzz.
I saw Weezer at Roseland Ballroom in 2005, and the show was also sold out (I think) and that place gets PACKED quickly, especially with a special show like this - i bet peeps will be lining up at the venue hours before doors open.