We'll have one full day (9ish hrs) in Port Limón, Costa Rica as part of a cruise we're doing over the holidays. Anyone have any suggestions of how to make the most of our time there? Our kids will be 6&5.

As an example of what I'm wrestling with, a lot of the excursions involve a boat trip through the Tortuguero Canals. I know they are supposed to be worth seeing, but the reviews I read are mixed, it's really about whether nature cooperates with your schedules. We did a Mangrove boat excursion in FL last spring and while it was amazing for the adults, my kids were bored and we eventually just gave them some devices to keep them quiet. Same with a boat cruise in Seattle. I'm trying to keep that from happening again. I'm also a little worried that the same thing might happen in the rainforest if we do something like a tram. A place where they can experience the environment and also be free to run around a bit might be perfect, if that even exists.

It seems like the best bet may be to arrange a customized tour with a private company onland, so I'm looking for personal recs of destinations and operators. Jaguar Rescue Center? Sloth sanctuary? Canals? Rain forest Tram? I've read through trip advisor reviews and again, but am at a loss... any advice/suggestions?