Re casinos; I expect everyone has a number where if they win that much, they would be willing to burn their relationship with the MSC and move on.
Re worst shop; It wasn't the shop itself, but the situation that comes to mind when I think about my worst MS experience. Was at a high-end hotel in NYC and came down with shingles on night #1 of the stay. My choice was to forgo all of the travel and hotel expense and return home, or just suffer through the shop so I could at least recoup my $$.
Needless to say, after spending most of the night in in the ER waiting to see a doctorl, I ate all the required meals at the hotel, went to the bars and did all the needed interactions, then took a taxi back to the airport and flew home, all in excruciating pain. My thought process was that I would be in pain one way or the other, so I may as well finish the shop, but I was limited on what drugs I was able to take to mask said pain while still being able to perform the shop. I still wince in remembrance of that experience every time I pass that hotel to this day...
The other sad part was finding out that my insurance had a 10% deductible for the ER in NYC, wheras I could have flown straight home and been treated for a $5 deductible in LA, so it ended up costing me a bunch of money to stay and do the shop anyway.