It also means I get to spend my last day in the park without having to rush out.
I used to take a leisurely morning drive from wherever I was staying down to Skukuza, stop briefly at camp for a bite to eat or so, and then drive to the airport early afternoon to catch my flight to JNB.
I recall leaving Satara as the gates opened one drizzly Saturday. I was first car down the road, and as I passed Tshokwane a guy in a rainsuit jumped out from behind a bush and flagged me down. He wanted to visit the Skukuza post office and needed a ride. Sure, no problem. As soon as I had agreed, half a dozen friends of his popped out from the bushes, they also wanted to "visit the post office". That post office was about to experience its busiest Saturday in years! I was driving a Toyota Venture (yeah, this was years ago), so had no problems squeezing them all in. I did emphasize that I would be driving at game drive speed, not racing to camp. That was fine with them, and it turned out they were absolutely delighted at each and every sighting. We saw lots of lions, cheetahs at Olifantsdrinkgat, etc. These people all worked at Tshokwane, some of them had been there for many years, yet it was like they were on their first game drive ever. We had lots of fun.
That was not the only time I've noticed that hitchhiking Kruger staff enjoy the game viewing. Many of them spend all their time within the confines of the camp where they work, and see people, not animals. The shuttle bus that takes them to and from work drives at breakneck speed and stops for nothing, so their opportunities for game viewing are less than minimal.
Back to Skukuza airport. Another advantage that should not be underestimated is what happens if your incoming flight is delayed. That will hopefully not happen often, but if it does you will still arrive inside the park. If you are late arriving at KMIA or Hoedspruit, you are faced with the problem of racing for the gate. This gate may be closed by the time you arrive, or there may no longer be sufficient time to get to the camp where you have booked your first night’s stay. If you arrive at Skukuza you are automatically in, and your transfer or vehicle will be waiting for you.