Markwfpb, I agree with you that MSC staff should enjoy YC as a perk of the job!
What kind of punishment do Interlopers face?
Before MSC started promoting bids to YC, I don't remember there being such a problem with unauthorized access. I speak of Miami sailings on Divina, Seaside, Seashore and Meraviglia.
We cannot blame MSC for increasing their revenue with these up bids but they REALLY should develop a better supervision system at the points of entry into YC.
As some have mentioned, close all accesses but one (not ideal) or add a security officer at all entrances or add face recognition.
MSC has found an easy solution to restrict access to the Ocean House. Why can't they do the same with YC?
Hope the issue is resolved by the time we sail next month! I will let you know.