Not sure if Ethoipian is dry or not but if it is then the Irish wouldn't fly it
Might be subsaharan however Ethiopia is predominantly Christian and overwhelmingly so among the ruling classes.
In addition there are sects nominally Jewish.
Alcohol is freely available as is the drug khat.
Muslims form a minority in much of the country other than border areas near Eritrea and Somalia.
No need to consider airline to be dry. In fact its one of the best on the continent !
Still opening a service to LAX is a major step for sure.