Is this event likely to cause large waves in the area? I ask because I will be taking a cruise next month which stops in the Antarctic sound, and I would like to live.
No, not particularly. It's already floating, so it will just drift away for the most part. Some smaller bits will probably fall off and produce some spectacular waves. By smaller bits, I mean stuff up to a cubic kilometer, so I wouldn't want to be standing next to it when it happens.
This is all much further south than cruise ships normally go though.