DD and I have played on both courses. Winter Summerland(right next to Blizzard Beach) and Fantasia. My favorite (theming was a hoot) was the Winter Summerland courses. We played during the day and in the evening. There are two courses - one winter themed the other summer themed. The courses were not so difficult. If you play one round the second is half price.
Fantasia was okay - we only played the one course there, and it was a bit harder than Winter Summerland, but still enjoyable.
We played over winter break, when we wanted to stay out of the parks due to the extra holiday visitors, but still wanted to be at WDW!!!
I have a few pics in my photobucket account (click on My Pictures, below), Disney Mini Golf folder, one folder for each location.