I prefer to only use WDW transportation. Even when driving down and having a car, Id rather not have to deal with the whole parking issue and shuttles and stuff.
I'm sure someone will chime in with a link for times, but it's all relative,and there is no set time limits. Especially for different times of the year.
Here's what I've discovered based on 2 separate stays at AKV .
From:
AKV. -->AK, roughly 5 minutes
AKV. -->HS, roughly 7 , 8 mins.
AKV. --> EP, roughly 10 mins or so
AKV. --> MK, I'd say around 20 minutes. This is were you would initially save time driving there, but would have to wait in a long line to pay to park, then find a spot, then either walk or find a shuttle to transportation center, then either embark on the boat or monorail. To me it's not worth the time and hassle.

either route enjoy your stay here, for this place (AKV) is truly Magical.