I watched the video. Its a good method, but I have been able to pack that much for a while. Like Jan said... use the inside of the shoes to hold socks/underwear, make good use of the void on the bottom of a carry one created by the handle hardware and then fill the rest with clothing. Its amazing what you can fit in one of those. But things they failed to pack- bathing suit(s), suntan lotions and other cruise requirements. But even with those it can be done.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007