How often do the resort buses run at DTD? We have a ressie for Kona and would either take bus to MK and then monorail or catch a Poly bus at DTD.
Which do you think would be quicker?
If it were me, I'd probably take the bus from DTD to the Poly and then ride the Monorail to MK. I found not having to worry about the car quite nice!
When we were there in Aug., we never waited longer than 10 min. for a bus anywhere except leaving a couple of the parks late. We went to Beaches & Cream one night (Well, several nights, but who is counting!

) We made a quick jaunt to DTD and caught the bus to Beach Club and then walked to Epcot. We found it very easy to do!
My son and I were at WDW a week before my husband came with the car, so we had to rely on the bus system this time. This was a first for us. When my husband came with the car, my son and I told him we would rather use the bus system, because it seemed quicker and less hassle. We plan on doing this again next year and just getting the car the day or so before we plan on leaving WDW to go elsewhere in Florida.
Staying in Congress Park made it a very quick walk to DTD and the bus stop. We found it very convenient. I don't really understand the people who are always complaining about the "walking distance" to everything at SSR. It was a little bit of a walk to the main pool, but not unpleasant. If we wanted to eat at Artist Palette, we would either walk there and hop on the bus after or get off on the way back from the park, eat , and walk back to our room. If you do a little planning, it's all good! I personally look forward to all the walking we do at WDW, because it is such good excercise!
Have a great time what ever you do!