We arranged for a one night pre-stay, with transfer to the ship, at the Santiago Sheraton. They upgraded us to the Cristobal, so we had a posh room with bath robes.
From our elite breakfast room, we had our first view of the Andes mountains. Wow!
The concierge arranged a taxi for us to San Cristobal Park, and we spent a nice afternoon, exploring the hill, seeing amazing vistas and having supper in a sidewalk cafe with the locals. The weather was beautiful.