This is an interesting tour. Adults will enjoy this too. They take you on a (free) tour through an actual working jelly bean factory. Along the way, they give you samples of the beans at various stages of the production process. The tour lasts about 45 minutes.
It's quite complicated to make a jelly bean. How long does it take? 3 days!
As you would expect, the factory has a lot of colors. What is really interesting though is how much robotics they have. The kids will like seeing the robot arms flying around.
Try not to go on Sunday when the production lines are shut down. The tours still take place though.
After the tour, you can go up to sample bar as many times as you like to select 3 jelly beans to try.
For fun, try some of the disgusting ones with your kids. When we visited, some of the flavors they had were puke, grass cuttings, and rotten eggs. Get one bean and split it between yourself and the kids. Those flavors are disgusting. But it's fun to watch everyone's faces when they try them.
It's a definitely an enjoyable tour for everyone. Have fun with the kids!