Your organisation of the trip was first class. Melaku Tesfa, our guide, was also first class: efficient, knowledgeable and an excellent travelling companion.
We made six intenal journeys by Ethiopian Airlines; all on time and to a high standard. Airport procedures are a pain: two identical security checks each time you travel.
The only sub-standard hotel was the Wonderland in Harar: six floors with no lift, which at that altitude is a challenge. Apparently until a new hotel is built it is the best available.
All our drivers were good, as were the vehicles, apart from the vehicle in Harar: less legroom than a Wiz aeroplane. But in a town where most taxis are mostly 1960s Peugeots, that is perhaps not surprising.
All your recommendations for what kit to take, were spot on. We needed our hiking boots, not just for the Simiens, but for every day - lots of rough terrain, even in Addis Ababa.
Thank you for organising an amazing trip.