My husband and I are flying into Jo'burg in early September and plan to rent a car and drive to Kruger. Are morning or evening safari tours available to book when we arrive or must we reserve in advance? We are on a tight budget and will mostly do self-driving tours, but would like to do a walking tour or a guided driving tour once or twice. Any info would be helpful. Also, when self-driving inside Kruger, are there places to stop for food and gas every 3 or 4 hrs or do we need to pack food ? Can you get out of your vehicle to walk if you see animals off in the distance and need to get a better view? Thank you.