The travel times are usually about 20 to 25 min to MK. 15 to 20 to Epcot and Hollywood and maybe 25 to 30 to AK. But that doesn't include waiting time. And if you are one of the first bus stops st OKW then you must go through all the other bus stops before you actually get on the road. And of course there is the traffic issue, which could increase or decrease time. If you really really need to be at a park at a specific time, I will would allow at least an hour to get to a park plus another 30 to 45 min to get through security and to your destination.