EY is great if you can make the dates line up to the two days a week they fly to TSE. A quirk of the AA award chart is that Kazakhstan is part of the Indian subcontinent so there are some good value EY redemptions compared to the cash price. But, it's hard to make the dates work with Wed/Sat flights unfortunately when those Wed/Sat flights are too early out/too late in to connect to GUW, so you have to overnight again both ways.
KEU is a small Massai Mara airstrip - I saw that it didn't come up in GCM. Odd - it comes up in the IATA search.
We most likely will transfer over and hope availability holds, if not they can get used eventually on a flight to PER (my original home) or somewhere else.