How much should I tip?

Gratuities are entirely discretionary, however it’s a good way to show your appreciation.
A reasonable tip would be $5-$10 per guest per day for your driver guide and maybe $5 per day for the overall camp staff.
Generally, most camps prefer the tip to be put in a tipping box at the end of your stay but if you feel one person particularly looked after you, you can always tip them personally.