It will probably all come to an end with a 20 minute version of "Who Says" with about 5 mins worth of "It's alright!"...
In all honesty, the set lists should definitely be different every night of the farewell tour, at least 5 or 6 rarities thrown in and songs from every album they made. It would be their last tour ever, so why not? Go out in a blaze of glory with some killer sets! No more vanilla!