I throughly enjoyed following my nose 99% of the time. Navigating in Central America and rural parts of South was easy. Stopping to ask directions lead to the best street food, hidden beaches and random stuff ( going to weddings, etc). It really helped me learn Spanish too. It’s always worth remembering drivers did this for 100 years, and walkers and horse riders for many, many thousands. GPS is pretty new.
Getting out of the mega cities in South America was not fun, and overshadowed the romantic aspect of the no gps thing. I spent 4 hours trying to get out of Quito. Multiple police pointed in different directions, etc.