Question: Right now, it says 2 days remaining - does it reset at midnight in my current timezone according to the iOS time? i.e. Does it end on Mon. Jan 6 at 12:00:00 AM EST?

Still have 12 more levels to decorate and I don't think I'm going to be able to get enough droids to hit that in time. I have the Imp. Bux to summon enough of them, but I'm really close to the final elevator so I'm a bit torn.

Answer: 
Two devices or more must be connected to the same WiFi network. One of the users must host the server, and the other ones will have to connect to it.
You can download the multiplayer server by getting multiplayer pe then one of them makes a password then everyonelse has to know the password to be able to play together.