As for lines, as long as people are not letting big gaps in between them, I have no issues. I have more problems with people and their big backpacks hanging over into the line next to them.
But on rides and transportation, I do not blame WDW I blame the people that think they're to "special" and do not need to follow the directions. How many times do you get on a bus, and you darn well know it will be standing room only, yet you got these (I will be nice) "arrogant" people that will stop in the middle of the bus to stand. Even after the bus driver keeps telling them to move all the way to the back, they just keep standing there or move 2 feet

.
The people in theatre's that stop in the middle of the row to sit down after CM's have mentioned many times to go to the end of the row, causing a big back up. Unfortunately, I could go on and on.