As an American or a Brit be ready for lots of official suspicion and hassle as Crazy Bob tends to blame most of the countries woe on clandestine involvement from both countries governmental involvement, Britain in particular.
Sad state of affairs, worthless money and repressed media along with squelched political opposition.
I think it could be pretty easily done but I'm willing to bet they'd like to squeeze whatever dollars they can from you all the while.
Lot's of disease you might want to think about taking precautions for also, petty crime in Harrar stuff like that...oh yeah and the animals too.
More here (Some is kind of old):
http://www.virtualtourist.com/travel/Africa/Zimbabwe/Warnings_or_Dangers-Zimbabwe-BR-1.htmlhttp://www.worldtravelwatch.com/archives/africa/zimbabwe/~Stiv
