This is a rumor that I have not been able to confirm, be prepared just in case it may be true:
I heard from a reliable source that due to the Britney Spears show going onsale this weekend the Jimmy Buffett onsale for Great Woods (the Tweeter Center in Mansfield MA) will be pushed back one week. Ticketmaster it seems didn’t want to have two major artists going onsale at the same time so they are pushing the Jimmy Buffett onsale back.