Okay, I've scoured all of the threads about packing, etc. I found a 28" Heys suitcase at Target and am confused regarding rolling, etc. I have a large space bag and was wondering if our stateroom hostess would allow me to use the vacuum at the end of the cruise. Any advice is appreciated. This is our first cruise and I'm trying to only do one checked bag and the rest carry-ons. It is myself, DH, DS (9), DD (8), and DS (6).