If you are going to visit, going during the week will be less crowded, plus the tour will show the full operations going. Also, during school breaks, it is much more busy with wait times of about 30-60 mins to do the tour. Otherwise, there is a very minimal wait. The tour is fine for all children of any age. We went with a 2 year old and 6 year old, and there was plenty for them to see and do. Plenty of accessible areas for strollers.
Now if you are in the area, it is a cool place to visit once. If you live in the Fairlfield, Davis, Vacaville areas, then you can probably go here once or twice a year, since it is a local thing. However, I would not make a special trip here if you are further like Fresno, SF or Modeto.
Make sure you try the free samples of the crazy flavors that are not normally available, like "pencil shavings", "dog food" or "vomit".
The best part about the tour is that it is free! Of course you will probably drop some money on the gift shop before you leave.
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