I disagree that those who drive to the parks are missing all the fun. And, I wonder, exactly what fun would that be? When we took the buses, it seemed to us it was alot of standing on overcrowded buses and making numerous stops, to go someplace only to have to make a connection with another bus to get there.
We've given up on the buses and now only drive our rental car to the parks. We even drive to MK.
For any kind of dining at other resorts, the buses take an hour, whereas the resorts are only 5-10 minutes' drive apart, even AKL.
Once we started driving to the parks and other resorts, we swore off the buses. (We do take the monorail and boats sometimes. We also occasionally take cabs.) DH commented that he couldn't believe how close everything is when you're driving rather than standing in the heat waiting for an over-crowded bus.
For our last stay at CSR, we were able to park our car close to the room. We used the car to go everywhere and never took a bus once. It was so convenient.