Myself and 3 friends were not in YC, but we did notice the smell of weed at the aft "adult" pool a couple times. We also noticed that crew members were smoking cigarettes right outside the outdoor area of the buffet restaurant one morning, which, of course, was blowing right back in on us.
Agree with everything you said about bar experiences. What Vodka I drank varied by the bar. One gave me Ketel One, one wasn't even sure is Absolute Citron was included with Easy +. It was a total cluster.
And yes, MSC is apparently trying to be the new Carnival. As a solo cruiser, MSC is appealing... but not if I am going to have to deal with awful service, and people who don't know how to act on a cruise ship... Including the men who made the aft pool look like a mosh pit one night.
This was my 3rd on MSC and the last two I have had to fight to get my Voyagers Club.... well, anything. If you are going to offer me status match, you better be ready to match it.