One thing I want to point out is that the Magic On Demand System is running in the morning untill 11 am. Between 10:30 am to 11:30am and there could be Delays in the amount of Wait times as the System switches back to the old system at 11 am.
Now you may ask why, Well its like this:
When Magic on Demand is running for the Wilderness Lodge and also the Magic Kingdom area hotels, they come under the Magic Kindom Bus Dept. but at a certain time (11am), the bus system switches to the other Theme Park Bus Departments.
So for instance, The Epcot Bus Dept takes over at 11 am for Epcot
Route, The Animal Kingdom Bus Dept takes over at 11 am for AK Route and the Studios does the same for the Studio route.
Downtown Disney runs a different Magic on Demand system
they switch buses around from one resort to another during the
Morning hours till Noon. One thing I will add about this is when you are on a Downtown Bus and let say you forgot something at the Hotel and want to Return back, you more then Likely would have to Exit at Downtown Disney and wait/Rebroad another bus.
This is the Magic on Demand System, and the Bus drivers themselves do not have any control over which route he or she will be assigned to do once the bus gets back to Downtown Disney or any Themepark for that matter. Its up to how each Manager wants to send each bus as it come through his/her area.
For Night Time events well the Biggest problem is the Traffic that the Buses get caught up into, and if you are going Downtown Disney I can tell you that more than likely it will be faster to take a car or a Taxi to get to Downtown Disney at Night. Day time is better Before 5 pm, or after 12 mid-night.
I myself like the old system the Best not as many problems with it as the Magic on Demand system has, use to have more buses on a per route basics, Back when we had the Color Flags was the Best as you could tell someone which color flag bus to take, or how to get from point A to B, perhaps changes will come in the Future but untill them we do the best we can and do it Safely.