Hmm, I was on that sailing. The weather was blah for sure and made for a rough sailing. But we had no problems with MTD, found out about formal night from waitstaff earlier that day. No issues with immigration in Boston or any debarkations. We are noob cruisers, been on Anthem twice. Boston was rather uninspiring but I was so cold so my brain may have been frozen. Our Northstart got cancelled but we went standby on day 6 0r 7 IIRC, waited less than 5 minutes and went on.
We had a great cruise.