I booked 3. Montevideo, we just walked around the town on our own. As the dock is right in the old centre, this was great. Puerto Madryn, we dived with sea lions. I organised it myself with Lobo Larsen who were super efficient at rushing us out to the site whilst the tide was right.
Puerto Arenas was the one that got substituted. However, when they substituted it, they then blocked $50 on my credit card because they took back the excursion credit and then said I'd be credited it 2 days after doing the tour. I wasn't. I had to complain again. Given I was within cancellation period and I hadn't actually agreed with the substitution, I thought this was taking liberties.
Did the Beagle Passage and train at Ushuaia, which was good but hardly worth $250. It would have been very stressful doing that independently because we got back over half an hour late.
And the Falklands was cancelled.
Having to meet in the theatre to listen to someone droning on about a tour before yours for up to 45 mins was very annoying. I don't understand why they couldn't just post the details to your room with the countless other bits of paper they posted every single day.
In Ushuaia, we sat for 20 mins in the theatre and were finally told we were on bus 28. There was no bus 28. They'd switched the order and we were on the boat first. The whole 20 mins was totally pointless.