"Guesting
Players will be able to visit other worlds as guests as long as they have friends on those worlds. This feature is free, but guest players will not be able to enter World versus World PvP, and the power of the Mists bonuses from their home world will continue to apply to their characters."
In the end its not so bad if some choose another world we can still play as a guest, but wont be able to part take in WvW.
Still choosing a home server we can all be on is essential as we can play more easily.
