You don't need and extra bag, per se. Just need something to put your last overnight stuff in until you get off the ship and can put stuff back in your luggage.
It didn't sound like the repair needed a drydock, just a part and/or someone to install the part. It doesn't sound like any of this would be an issue if another engine wasn't already scheduled to come offline for routine maintenance.
Last July they did temperature checks on the cruises out of Nassau, but none since.
Most quickly realized how useless temperature checks were for covid