On our long cruise on the Magic, the laundry rooms did seem busy quite often, but the last day was the worst (obviously, lol) - DH witnessed what he said was nearly a fistfight, apparently there was a line of people waiting, when one person just walked in and tried to commandeer a machine. It didn't help that the machines broke down at some point on that last day so there were technicians in to fix them - and after they fixed them they made all of the machines free for the rest of the day which was nice. A lady who was waiting with me told me she usually sails P&O, a British line, and their laundry rooms are massive and roomy with many machines. That would be nice, but I at least appreciate that DCL lets you do your own laundry when many other lines don't now.