Here goes my story on bus transportation.
***I only took the bus a couple of times, so most of my opinions are based on others and what I observed. Also things may have changed since Christmas in terms of how busing is handled.***
It's a lot easier to live at Vista Way if you have to take the bus. The "O" route is from Chatham Square and The Commons to Vista. You have to take this from either to get to Vista Way (the main bus hub).
The buses at night (especially after parks are closed) can really smell bad. Especially if you get lots of foreigners (sorry, but some grooming habits aren't the best. This goes for US people too). Not to mention that lots of people closing the parks work in restaurants.
Most of the time people would leave the apartment complexes an hour before time to work. It usually got them there plenty early, but it's better to be early than late. If you can, try and find someone that works a similar schedule to yours or can drop you off. You won't have to leave but about 30 minutes before your shift starts.
I believe that most buses going to and from work ran on
schedule or within 5-10 minutes of scheduled times.
Some bus drivers are better and safer than others.
The bus/shuttle to Wal-Mart is less reliable due to traffic. I'd try and take it ONLY if you need a few things. Carrying large amounts of goods can be troublesome. Also DO NOT GET COLD FOOD items if you are taking the bus. It's hard to time your checkout when the bus is arriving. I know several people that had ice cream ruin and have cold stuff out in the heat for an hour trying to get back to the apartments. It's much better to find someone with a car.
Summary:
Buses aren't bad for getting to and from work. They have some negative aspects, but everything does. It's reliable and will get you there on time if you plan accordingly and leave early enough. Try and find someone that can give you rides especially if you need to go somewhere other than on Disney property.