If you ordered it online before August 1st it will already be set up for you in the room. If it was after August 1st, they will have a trailer in the parking lot where you will be able to pick it up on move-in day and then you would just bring it up and assemble it! Hope that helps
I worked in the dorms for the first half of the summer and all of last year. Mandy Runnalls is correct. They should be set up for you when you move in if you ordered them beforehand. The truck will be in the parking lot as she said for those late orders. If it's not in your room and you did order it before the 1st, you just go to the housing desk in RWJ and notify them. They will direct you to the truck to get your new loft. In addition to this, there will be volunteers there to help bring up the loft and even assemble it! Although, I've set up many lofts, and they aren't too hard to get assembled.