Great trip, with loads to see and do. As others haven mentioned, it's a little front-loaded with the cycling. The Thailand part is mostly cycling, which is great. It was very hot when we went – over 40c, but the cycling is flat so the distances aren’t too taxing. Of course you don’t have to cycle all of every day and at any given point, there was someone taking the van option on our trip. The stops during the cycling were a little too frequent and a little too long for me, but other opinions are available!The Cambodia section is split between the Angkor temples and Phnom Penh, with not a lot of cycling anywhere. The temples are exceptional – I would maybe have a liked a little more time at some of them, but you can’t have everything. Our group opted for the Tonle Sap Lake trip over cycling. In hindsight I would definitely go the for the cycling – the floating village is not nice and the later trip in Vietnam to the floating market is a much better experience. The Phnom Penh section is a chance to relax a little, but I would have liked a little cycling - outside the capital maybe? (Phnom Penh is very busy on the roads!).Vietnam is awesome and the cycling superb. Village life is the highlight and the homestay is also excellent. Many (but not all) people on our trip only took their anti-materials for the few days we were cycling the Mekong, rather than the entire 2 weeks plus. I had some fairly funky dreams in the run up to this part, which I put down to my Malarials!