Finally, the trip that has been in the planning for about twelve months begins! I don't think I have ever booked anything as far in advance as this one, and yet I needed all that time in order to raise around £3,000 for my chosen charity, Alzheimer's Society. Despite most people wearing their Charity Challenge t-shirts, I didn't actually meet any of the group I was going to be trekking with until we were swarming round the baggage reclaim in Nairobi Airport....