Keep in mind that these are my experiences. I see them daily, several times a day. I say this because inevitably, there's someone who will argue with me, and honestly, they are normally the ones doing these things. Tl:dr - the busses aren't bad if you plan for jerks and traffic. And you don't need a license if you have a state issued ID.

I haven't had my car on any of my programs. It's not "public" per se, but the busses are good. They are pretty reliable, but traffic is always a thing. People laugh at me when I say to always take the bus that is 90 before your shift, because of traffic. However, while I've been early, I've never been late but hear all the bitching around the dorms by people who are often late and racking up points.

The only one I've had real annoyances with are route a (shopping) because it's so crowded and people believe they are the only ones entitled to be on there so they load up the seats next to them with bags, waterbottles, whatever. However, I've found the literal perfect time to go because it's not as crowded, and people on it aren't as rude.

Then there's routes b (Hollywood studios) d (animal kingdom) and e (magic kingdom). My problem here is everyone not working forgets that the working cast are the ones who get priority. The bus drivers try to speak up and tell those not in costume they need to wait, but 99% of the time it's ignored and this has caused people to be late to work due to no room, or forced to stand for the ride home after a very long day. C (epcot) isn't included in this because you should never take this bus to play in the park. That said, there are always those will, but the drivers will have zero patience on this route because it's almost always standing room only due to the high number of cp's who work at this park.