Mingling with gelada baboons and looking out at the breathtaking views from the Simien Mountains create memories never to be forgotten.
The walk to the Blue Nile Falls is also extremely rewarding, passing through spectacular scenery to reach the magnificent waterfalls.
Lalibela is a charming place with its amazing rock hewn churches set amidst wonderful mountain scenery. The mule ride to Ashetan Maryam, with my over-eager muleteer "helping" me at every opportunity, also stands out in my memories!
Try not to change too much money as changing back any surplus into hard currency is problematic, particularly at the Ghion Hotel where they insist on a photocopy of both your passport and ticket and, of course, in these days of electronic tickets we do not have paper tickets, so nothing doing! At the airport, where there are supposedly 24 hour exchange facilities, we were directed to an exchange bureau in the Arrivals Hall, but it was just closing for 1.5 hours, and it would have been a close run thing to wait for it to re-open. Fortunately we found a tiny exchange booth near the Duty Free shops which was open and did exchange our excess birr, albeit at a not very good rate.
Although the trip is graded "moderate" a reasonable degree of fitness is needed for walking at altitude and for the descent from Ashetan Maryam and also for negotiating the steep and often uneven steps at the Lalibela churches. You may well appreciate a walking pole or two for support.
Basins in hotels mostly have no plug so it's useful to take a universal travel plug.