As in BB's case, I can say that in all the trips since about 1961 (which is the first I can remember) there have been quite a few memorable moments; many of the scary ones were also quite funny.
Ones that stand out:
This was about 25 years ago, one of the first times my wife and I went to the park after we got married.
I had a VW Kombi (about 1978 model) which had the disturbing habit of not wanting to start again if the engine was stopped after running for a while (so when it was hot).
The problem was that the starter motor did not want to engage and the only way of getting it to start was to whack the solenoid with a spanner while someone turned the ignition on (and held it on).
The solution to this problem was, of course, to not switch off the engine.
One day, near Shingwedzi, on a loop near the river, we stopped and I switched off the engine without thinking.
After about an hour it became clear that the only alternative was going to be getting out (illegally) and whacking the solenoid (this was way before cellphones and we had not seen another car).
This meant getting out of the car and sliding in underneath the car near the rear wheel on the driver's side (the rear sliding door was on the other side of the Kombi, so the closest door was the driver's door).
My wife was in the driver's seat and I was out through the rear door like a flash, round the car and underneath.
Yelling to my wife to start the car I started banging the solenoid, nothing happened.
I eventually got up (now much calmer), walked to the drivers door; window wound firmly up.
Turns out my wife could not hear me yelling from underneath the car.
Anyhow, communication now re-established, I was back underneath the car, and the banging the solenoid routine got the car started.
Quite blase by this point, I strolled around the Kombi to the passenger door; dusting myself off as I went...as I reached the door I looked to my left and there, in the shade of a Mopani bush was lioness looking at me curiously.
This was about 30 meters from the car.
I remember going absolutely cold.
This was the first and the last time I have ever gotten out of my car in the KNP..
Funny: There have been some moments, but one that stands out happened in Skukuza.
My youngest son was about 4 years old, and he was throwing around a tennis ball outside the hut.
We suddenly heard this ear-piercing scream and rushed outside...there he was confronting a warthog that was sniffing at his tennis ball...
Many of the other amusing moments have been supplied by conversations around the campfire of neighbouring huts, getting progressively louder around the evening wore on.
I remember one rather portly gent in a Bulls rugby shirt asserting quite loudly that he did "not rate Bryan Habana at all" and that he "could have scored any of the tries Habana scored at the 2007 world cup" himself...