With the recent GroupOn 'offers' I felt I needed to submit my review to warn others, so they don't have a disappointing week like we - and seemingly most reviewers - experienced.
Firstly, I feel it best to point out that the 'offer' isn't an offer. It is, at best, a very small saving on the actual price - with the guide price being heavily inflated.
Having previously been on 8 cruises, 6 of them with RCI and 2 with Disney, I can only equate the experience we had on MSC as going from riches to rags.