Hello, Hope you are still looking for a reply. I don't think many people know about this feature for OAT/GCT. Our group of 12 did not. We just got back from Tanzania Dec 26, 2010. Don't worry about recharging. The staff in all locations make it work. Do have extra batteries and extra memory and don't count on getting on-line, as I hear it was very slow. At Olasiti, Farmhouse and/or Tloma you can recharge in your rooms. You will need the 3 prong adapters. At Burungee tents you do it in the shared reception area. There's a big table with everyones stuff on it. I was worried at first but 2 mins later felt fine about it. At the campsite you give whatever you need to the camp staff and they charge it when the generator is running (usually while they are preparing meals) so good to have extras while they have yours. It worked well.
You will have a fantastic time. Don't over pack. Wear things multiple times. The lighter the better.