We like to bring foaming soap (as I don't like using bars that they have there). And the method soap dispensers that look like mickey/minnie....are perfect!
I also purchased hanging closet organizers (for sweaters and such), one for each of my kids, to hang on the rod in the 'storage' areas of the room. I unpack the suitcases and put all my kids clothing, separated for each day, on each shelf. Then we don't have to live out of suitcases and I use vertical space.