All you need to do is to go to the Chat Area HERE:
People From USA can join or create a One Direction - THIS IS US theme party and get it (see below picture)
For people not in the USA
Go to chat here:
1) Set the Country in UNITED STATES
2) Then click a One Direction -THIS IS US Theme Party that is already on and stay on it a little
(you can see how it looks below in the photo)
It might take a while to arrive in your suites!!
xoxo, sdoreymenano