We did South America last January on the Mercury and loved it! In Ushuaia we hired a taxi on our own (he spoke about 10 words of English and I spoke about 10 words of Spanish,so it worked out!). Actually, there were 6 of us and we split up into 2 cabs and one of "us" did speak Spanish, so he negotiated the deal. They gave us a great tour of the city, and then at the end we wandered around on our own. We had a "terrific summer day" for down there...50's and partly sunny. Be prepared for wind, damp & chill. We had one particularly rough day at sea, but we loved every minute of it. If you do get sick, the medical facility has some great stuff (so I'm told) to cure you. Have a blast!