I think that information might be on This site . I know it is in the Unofficial Guide, but I don't have that here right now. When we stayed, we thought the bus service was good. Like OKW, it is best to Epcot, MK and MGM. It takes a bit longer to AK, since there is a stop at the water park.
Are driving your car or taking a bus? It is a lot faster to drive to MGM and AK from SSR then taking the bus. Epcot requires walking after you drive and MK is just easier to take the bus. Driving to MGM would take about 5 minutes depending on the traffic lights-AK would be 10 to 15 minutes by car but bus it is a real milk run. Epcot depends on where you drive to to go to the park. Like I said before MK is really a bus ride which would take about 10 to 15 minutes once you leave the main gate of SSR.
Because you never know whether you will be standing at a bus stop for 1 minute or 15 minutes, we usually allow at least 30 minutes to reach any destination.
If you're on a timeline for Priority Seating or some other scheduled activity, give yourself an even larger buffer. Even on slow days it's hard to predict travel times and other mitigating factors like lines at the bag check, turnstile, stroller rental, etc.