The hop-on hop-off bus was fun but it wasn't the kind of hop-on hop-off we are used to. Usually you get off the bus if a place interests you and you want to explore. In most places the buses run about every 20 minutes so you catch another one when you are ready and continue on until you want to get off again.
This one didn't allow people to get off and wait for the next bus. There were particular stops scheduled and the bus waited while everyone got off for 10 or 15 minutes to explore and take pictures. Then everyone got back on and the bus proceeded to the next stopping place when everyone got off again (unless you wanted to stay seated on the bus through the stop).
Durban, South Africa was a very pleasant surprise!
Picture on right - before the bus left Bill got a pictures of me on the bus holding up one of the "contraband" license plates.