Hi Eleanor
I have booked this trip for September. I doubt you will need a lot of money as all meals and safaris are included in the price. All you will need is to pay for drinks, any souvenirs you may wish to purchase and tips. I always take some local currency and some Sterling as well as a credit card in case of any emergency. I am thinking of taking £100 worth of Kenyan Shillings when I go unless someone who has been suggests anything different.
Do write a review when you come back as I would be very interested to read about how your trip went.
Kind regards
Jaya