How hard is it to get back and forth between the parks and the miniature golf locations (Fantasia Gardens, Winter Summerland)? Do busses run as frequently from the parks to those locations and back as they do to/from the resorts?
There's a bus from WDW resorts to Blizzard Beach/Winter/Summerland that runs year round even when Blizzard Beach is closed for rehab, Fantasia Gardens you'll need to bus to the Swolphin and walk over.
There no direct busses from the parks to any of the mini golf's. Transfer at a resort to get there unless you're at MGM then you can take a boat to the Swolphin and walk over to Fantasia.