I know it is illegal to drive after dark in Etosha. Also, insurance for rental cars are voided if driving after dark in Namibia. However, do any of the Etosha camps offer true night game drives? Not just evening drives that return at sundown, but night game drives. We will be staying in Dolomite, Halali and Okaukuejo in July. Sunset is pretty early, around 530pm. We can spend time at the waterhole at Halali and Okaukuejo, but there is no such luxury at Dolomite. Besides, I think we will get quite frustrated with the mass of people talking and socializing at the water holes (we did at Halali back in march).
I am also assuming that there are no walking safaris or hikes in Etosha.