The only bus that runs to/from Blizzard Beach/Winter-Summer Land is the Epcot Bus.
So you will have to take your bus from the resort that you are staying at, and goto Epcot, then get on the bus that does the Coronado Springs bus route.
Guest that are staying at the Disney Resorts at the Magic Kingdom (the three resorts on the monorail loop) would have to take the monorail to TTC then transfer to the Epcot monorail loop then transfer to the bus at Epcot. Guests staying at Wilderness Lodge or Fort Wilderness Campground can get the bus to Epcot from their resorts bus stop.
Guest that are staying at the Epcot Resorts (Swan/Dolphin Yacht/Beach and Disney Boardwalk) must get to the Epcot front gate, unfortunately theres no bus to the front gate of Epcot in Future World, So you would have to walk through Epcot to get to the Bus or take the Boat to Disney/Mgm, then Transfer to Epcot Bus.
Once you are at Epcots front gate (outside of Future World) look for the bus stop for the Coronado Springs Resort, which also stops at Blizzard Beach. Be sure to tell the driver that you want to go to Blizzard Beach to play golf as sometimes the driver may not stop there otherwise. Guest that are staying at Coronado Springs should also ask the Epcot Bus or even the Animal Kingdom bus driver but the Epcot bus is the Designated route that Disney wants you to take during Blizzard Beachs Rehab period.
You can also ask the Animal Kingdom buses as they come into your resort, most of the time during the morning and early afternoon hours, (Except for the Animal Kingdom Lodge or All Stars routes) they should be able to drop you off on the way to Animal Kingdom, but you must ask and is by request only they will only drop off not picking up at Blizzard Beach.
To Come Back from Blizzard Beach. All Guest must go back by taking the bus to Epcot then transfer to their resort bus at Epcot or get on the Monorail at Epcot and Transfer to the Resort monorail loop in order to get to the MK Resorts. The Bus back to Epcot stops running at 9 pm when Epcot is closed for the day. Keep in Mind that Winter-Summerland is normally open to 11 pm, so it may be easy to forget about the 9 pm last bus to Epcot. If you do miss the bus after 9 pm you can walk over to Coronado Springs or the All Star Sports Resort for a bus to Downtown Disney when runs till 2 am each night. (There is a Sidewalk that goes from All Stars to the Coronado; Blizzard beach is between the resorts).
