Most Inspirational Moment
I am not sure about "inspirational", but for me the most fun cycling was in Vietnam where the route passes alongside a river marking the Cambodian border, and where the people - young and old - seem so genuinely happy to see the group passing through the village. The War Remnants museum in Ho Chi Minh City and the Killing Fields & S21 jail in Phnom Penh are disturbing but essential to visit to start to try to understand the recent violent past. In both places, they have made a real effort to document and explain exactly what went on in the hope that it won't happen again.
Thoughts on Group Leader
Chai was superb. Nothing was too much trouble for him, and he did a great job of keeping the group together, managing three different teams, handling all of the paperwork and border-crossing formalities, and explaining everything that we were about to do (often multiple times over). He really cares about and takes pride in doing his job well and he is incredibly patient. He's also a really nice guy. I managed to mislay a couple of personal items on one of the buses and he has made it his mission to get the returned to me in the UK.
I have to also mention the Thai team, in particular Mr Black and his two sons - lovely people with a real passion for cycling (and, in Mr Black's case, photography - he took loads of photos and videos and loaded them up on to memory sticks for us just for fun, in addition to driving the support vehicle and keeping everyone topped up with water).
Advice for Potential Travellers
Siem Reap is busy so if you are not confident cycling in traffic, jump on the bus for the first and last stretches of the cycling days in Siem Reap.
There is a great big Tesco superstore (yes, really!) just across the road from the hotel on the second night, where you can stock up on all kinds of things you might have forgotten, and food. They have an in-store pharmacy and electrical goods section. The hotel on the second night isn't great but it is clean and does the job. We found that the water tended to be lukewarm in all of the Thai hotels, much better in Cambodia and Vietnam. We still haven't worked out why the hotel in Siem Reap played nursery rhymes as background music in the communal areas the whole time were there. We took the option to see the sunrise over Angkor Wat - which is fine, but don't be under the illusion that you will have the place to yourself - there were hundreds, possibly thousands, of people doing exactly the same thing!