It is important to be prepared for the unexpected. No matter how well you prepare something, there are always things that go beyond your control. I suffered that when I had planned a week of holidays and training and when the moment came, the weather was awful. I had to change my plan and try alternative routes.
We have been preparing the Kilimanjaro challenge for months: training, buying kit, taking vaccinations and much more, but I am sure we will find something unexpected when we arrive there and start climbing the mountain. So the key to success is to adapt and to be able to change quickly.