Mark me cargo, because as long as I'm on the ship that's the important part 😉
So far my stateroom assignment remains, though my boarding time got moved 3.5 hours earlier, which I'll happily accept.
I know you were joking, but I actually ran some numbers a few weeks ago on MSC which might be of interest. They're WAY more used to carrying passengers than most cruise lines - just not in N America.
Per 2018 Cruise Market Watch, NCLH (all three brands combined) carried 2.47mm pax, and had 12.6% of market revenue. MSC carried 3mm pax, and had 9.8% of market revenue. The share of market revenue isn't surprising - not b/c of their low prices in the US (that's a sliver), but because NCLH's numbers include Regent and Oceania (much higher per diems), and MSC operates many ships in lower-priced markets.