We take the busses exclusively and never worry about the waits. We are on vacation. We love the bus. It's part of the vacation. If we have to wait, oh well. Get to know the neighbors. If it looks like standing room only, we stand back and let others go on before us and then wait for the next bus. Park closing? We grab a bench at the park and hang out for 45 - 60 minutes and let the crowds thin. If we are going to wait that long, anyway, why do it in a line of crabby people? We sit and soak up the atmosphere.
We don't hurry. Not what vacation is about to us.
That being said, we have never waited more than 30 minutes or so (well, ONCE...at CSR...and that reason alone is why we do not like that resort anymore...bus service was crazy both times we have stayed there!)