We were at WL from 12/22 to 12/31 this past year. The Disney Florist trees are REALLY expensive-if I remember correctly, like $400???? I was already spluging on a WL room at holiday season rates-a $400 christmas tree just didn't seem worth it to me.
I bought a $29.99 pre-lit 4.5' tree with it's own stand at Wal-Mart. It folded up like an umbrella, the box was not a bad size at all, I shoved some decos for the tree in the box and re-taped it. It was very lightweight. I originally planned on sending it UPS, but I ended up just checking it as a peice of baggage with the airline-no problem at all. When we arrived at the airport we did curb side check in...when we arrived at MCO we did Magical Express, all our luggage, including our tree box appeared in our room a few hours after we arrived. When we left, I simply re-packed the tree and decos-re-taped it(I packed a roll of packing tape in the box). Bell services brought our luggage down, we did the airline check in at WL and picked up the box when we returned to our home airport. No lugging a box though the airport-very easy, no problem at all.
I packed two extra strings of lights and wound them around our balcony railing. I bought these small 3M hooks to put on the wall to hang stockings that I bought at the dollar store and wrote our names on them with glitter glue. The hooks come right off w/o damage to the wall(they are designed to do this)and I took them off before we left.
Every night we turned our lights on-it was a great night-light and the tree and the decos just made us feel like our room was "home" over Christmas. I think it was my favorite Christmas ever!
Now, I'm all set the box is all packed and ready to go for another Christmas trip to WDW

...I just have to convince DH to spend the $$$ and go at Christmas again!
Presents-I hit DTD the first night while DS and DH had room service grilled cheese, decorated the tree, and went to bed. I got a big bag full of smallish items that wouldn't be a problem to pack on the way home. I had packed some wrapping paper that was folded (not on a roll) from Christmas tree shops, a roll of tape and a pair of child's sissors. The next day the guys went to the pool, I quick wrapped the gifts. I hid them in the closet, DS was way too interested in other things to pay attention to a big bag up on the top of the closet. Santa came on Christmas Eve in the middle of the night-ds was so wiped out from the day-he never moved at all!