AK resort has only two bus stops, one at Jambo and one at Kidani. The bus stops at no other resorts when going to parks. Kidani is usually the first stop going to and coming back from Studios. The trip to AK is very short, the trip to Studios takes about 20 minutes from Jambo. I have found the park busses at AK resort to be somewhat more reliable and on time than at other resorts.
Note that total trip can be much longer depending on where your room is. For example, the bus stop at Kidani is fairly near the front entrance. However, the Kidani building is about 2/3 mile long. From a room near the end of the north wing, the walk from room to the bus stop can take 10 minutes with kids.
There are no longer direct busses to Blizzard Beach from any resort. To get to Blizzard Beach via bus, you must first take bus to Animal Kingdom park and switch to a Blizzard Beach bus there. That double bus system can often take quite awhile because of the need to wait for two different buses.