Hi, Joe!
Your family might love to try
Fantasia Gardens and Fairways Miniature Golf, which is located within walking distance of Walt Disney World Swan Resort. Just take transportation to The Swan from any WDW park, including the water parks, then walk over to the mini golf course. It's truly a beautiful course!
If you're spending the day over at Blizzard Beach, you are within walking distance of
Disney's Winter Summerland Miniature Golf Course, so this might be a good option for you as well. Just head out the exit from Blizzard Beach and stay to the left. You'll see a walking path that will lead to the miniature golf course in just a few minutes. (Check out the map on the above link to see how close it is; great plan!)
Taking advantage of the included pre-4 p.m. visit which comes with your Water Park Fun & More Option is a great idea, too. Take a break from Blizzard Beach and have a little mini-golfing fun, then head back into BB for the rest of the day, or head back to your resort for a little R n R, then change and head back out to a park or Downtown Disney for dinner. What a great day you have planned!
Send more questions as you think of them, Joe; I love to help Guests make the best plans for their families when traveling to Walt Disney World!