For the first time, instead of self-driving, we opted for going on a paid safari. Couple of factors influenced us - 1st: our car had recently broken down 200km from Dar and we'd had to spend New Year's day at a dodgy mechanic who took out half the engine to fix it... although the car was driving, we weren't confident enough to drive it 600km to Arusha and then into the parks and back again. And we were right, it broke a month later when we were again 200km outside of Dar! (Read all about our dramas here). The 2nd thing was the time - we only had 5 days and it would take about 1 1/2 days to get to the Serengeti - that's 3 days of traveling and 2 days of game park... So we chose to fly to Arusha the night before and head out first thing in the morning and spend 4 nights in the Serengeti...