We invited some family members to go as well and they also were so glad they came along.
So first go to this site to purchase tickets: Purchase Cave Tour Tickets You can do it at the visitors center, but they often are sold out especially if you have a larger group like we did. If you just want 1 or 2 you may be able to get some same day, but you never know.
It's easy to get there. just drive up American Fork canyon and pay the entrance fee. Then a little ways up you will see the Timpanogos Visitors Center on the right side. They have bathrooms, water and the start of the trail. You can pick up your tickets here within 15 minutes of your start time. They give you about an hour and half to get to the top for your cave tour.
After that you hike about a mile and half up to the cave entrance. Its is pretty steep and I would recommend lots of water. There is no where along the trail to get any, so don't be stingy. There is 20 markers along the way to help you know how far you have left or have gone. So at 10 you are half way there. Along the way there is beautiful views, facts about the rocks and some steep spots.
When it's time for your tour there are some things you should know. There is no hard back packs, like backpacking packs or child carriers. you can have them on the trail but before you enter there is a bear box to store them in. Any soft bag or back pack you are wearing they make you wear it in the front. So a front carrying baby carrier is fine. Also no food or water in the tour. They will make sure camelbacks are closed and not dripping, to help protect the cave.
Inside is always cold. It will always be a constant 45 degrees. So I suggest bringing a sweater or jacket. If you have kids make sure they have some kind of jacket as well, cause it is cool. The tour can take an hour to an hour and a half. So it may feel nice at first but no one else on the tour wants to hear whiny kids the whole way, so come prepared.
One thing I don't remember from the last time I toured (which was a lifetime ago) was the key thing that makes this cave so different from other caves. That is their helictites. they don't know what causes or creates them but there has been some different theories.
Every kid walked away with a different favorite part or memory. Some liked when they turned out the lights and it was true darkness, some liked the heart of timp cave, some the chocolate milk slime, I liked making a new memory with my family. I love science, the outdoors and my family so it was a perfect family outing!
So let me know if you have questions bout the experience, I can try and help.