Be out at the bus stop 45 minutes prior to your seating time.
As for the resort with the best transportation, they're all the same. No matter what anyone tells you, they're all the same. They all have the same dispatches. They all have the same crowds. They all have the same glitches and snafus. When you average everything out, they are all the same. Which is why it's important to pick a resort based on theming, and not transportation.