Having a sabbatical from teaching

I am planning a 5 month break from teaching science at a secondary school in Wiltshire.
I will fly out to the Quito (Ecuador) on 16th September and visit the Galapagos. This is a place I have always seen as beyond my dreams, but I will actually go there!
Then I will travel through Peru and Bolivia, finally flying down to Patagonia in Southern Chile.
My oldest friend is going to join me there and we plan to have a jolly adventure in the mountains. Think Thelma and Louise minus the drugs, fags, tight leather and ultimate deaths..
I will fly back to the U.K. on 18th December.
And what then?? Back to work of course.
But who knows what will have changed.