Yippy, no one goes just once. We've been 11 times and have spent more than a year all over southern Africa hunting with cameras. I figure I've taken 30 or 40 thousand pictures and have driven more than 25,000 miles in South Africa alone. There's nothing like it.

Kalahari Park Ranger - better to have more than one shot available...

I have been engulfed buy herds to vast to count.  I woke from a nap one day on the north slope of the Alaska range engulfed by a huge herd. The clicking sound of their hooves when they walk woke me. Caribou graze at about seven miles per hour. When they walk their hooves splay out working as flotation and when they raise the foot the hooves click back together.  The hundreds of clickity clicks woke me and when I peeked out my tent I was surrounded by hundreds of caribou.  I was a guide in the Mulchatna river area near the west coast. Saw many large herds there too.