Traveling the Camino Trail during Covid

I am an American who plans to do the Camino Trail via the Coastal Portuguese way. I am wondering what the difference in travel restrictions means to walkers in both Portugal and Spain, and if towns I plan on traveling through will each have their own regulations.

I am completing the planning and traveling without an agency. I am also not a native Portuguese or Spanish speaker, so reference sites should be accessible in English without a translator.