I took a group of international college students here for an afternoon. The weather was very cold for July, so we didn't do the waterslide, but we had a blast anyway. The guys loved the go-carts: "We will tell our friends that we drove in the US!" The Lakes mini colf course is fun and challenging: at least two people had their balls land in the water. I also enjoyed reading about a different Minnesota lake at each hole. My personal favorite part of the day was watching one of the girls laugh non-stop on the bumper boat.
To take advantage of the Family Fun ticket, I think you'd need an entire day at the park. There's not a great variety of food available, and it really added up for 8 people. However, the cost of rides, mini golf, and batting cages is quite reasonable.
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