We're thinking of Galapagos with Nat Geo next March, and I'm curious what types of trails/paths or "non-existant" trails are on the islands?
I have some hip and foot problems and rough terrain can make me very unhappy the next day.
I know I probably won't hike the Lava fields, just wondering what everyone else has experienced

You should find a description on each island about the degree of difficulty of disembarking and the terrain. It varies based on itinerary.

If Nat Geo doesn't have that, some of the other travel agencies should (I think Road Scholar usually has good descriptions).

Here's a link to the Road Scholar descriptions

https://www.roadscholar.org/find-an-...am/itinerary/5

And a more generic link

https://www.igtoa.org/travel_guide/islands

Good luck with getting any information from Nat Geo about what the daily excursion options are...their website obfuscates exactly what is on offer each day, but they do offer alternatives for those who chose not to do the hikes.