As a fellow writer commented, porters for your gorilla safaris are essential. This encourages local employment and money back into the local community.
When I was looking at this I found World Primate Safaris as a specialist gorilla safari operator who seemed very good with excellent local knowledge. They are the sister company of World Big Cat Safaris and once again seem to know their stuff.
Gorilla Safaris - www.worldprimatesafaris.com/destinations/rwanda/main-attractions/
World Primate Safaris - www.worldprimatesafaris.com
Send your feedback or queries to firstname.lastname@example.org