hi mkkim
we own at VWL, but have visited OKW on 2 trips. Wonderful place. We were near south point on one visit and did get bus noise from the bus stop...but it was not terrible. on our second trip, we were near turtle pond. A road was behind our building (? community drive?) so we got a lot of traffic noise. At first, this upset us and we considered asking for a switch to another building. But we soon acclimated and did not really notice the noise anymore. It really wasn't too bad.
For both trips, we rented a car...but we only used it for a couple dinners at other resorts and for pool hopping. We relied on buses for the parks and the trumbo ferry for DTD. We were quite pleased with the transportation at OKW, despite reading horror stories about it here and worrying that it would not be adequate.
You may not want to request a specific area. They all have advantages and disadvantages. Sometimes it is fun to see what you get and experience it. You might find an unexpected suprise. If something does turn out to be bad, and you can't deal with it, i am certain Disney will make it right! Just a suggestion.