we didnt go into lake manyara NP but did spend one night on our way out at a tented camp on the great rift escarpment overlooking the lake. the development on the other side of the lake has apparently grown rapidly in the last few years. still beautiful views but the lake doesnt look too wild these days.
whatever your political views now is not a bad time to be an american traveling in africa. in tanzania they have "traffic police" which is an unpaid job. they just give them a white uniform and a baton. they make their money by pulling people over and checking to see if they have the required documents/equipment in the car. if you dont have it then you pay a "fine" that the traffic police just pocket. of course they only pull over cars that look like they could pay something. we got pulled over about 5 times and they would be very serious until they figured out we were from the US. then they would smile and say "Obama!" and let us go.