Visa: Got in Calabar. Would not accept Nigerian currency, only CFA (West African or Central) or USD. Worked out at 50 USD each.
Insurance: Carte Rose bought in the first town. Nothing at border crossing.
Currency: Use the Central African CFA, same rate as West African CFA but not interchangable.
Driving - Cal Metalliques are a new requirement, need 2.
Limbe - Seme Beach Hotel, great spot for camping for 5000 CFA. No shower although there is a volcanic private beach, fresh water stream, peacocks etc.
Mayamba Hotel - Camping for 5000 CFA. Lovely pool and great view of the oil rigs.
Yaounde - Presbytarian mission, basic and relatively expensive at 6500 CFA but the only choice for camping.
Kribi - Hotel Ilomba, camping for free with use of restaurant, private beach, infinity pool, pricey beer.
Buea - Prebytarian mission, hilly campsite, basic facilities, cool after sticky Limbe, walking distance to tourist information for Mount Cameroon. 3000 CFA