I am starting to get used to these overnight bus journeys - and have developed very strong bladder control. There are toilets in the buses but they are less than pleasant. We have now done 3 out of our 16 overnighters - we do have the option of upgrading to flights for a few of the legs. If it were up to me I would wimp out and opt for the flight - but it will be based on a majority vote among my fellow travellers. We arrived in Manaus today. A few of the histo...