The minimum age to participate is 8 years old. All children under 16 must be accompanied by an adult. Children under 7 years of age may attend the tour as observers for an extra fee. The maximum weight is 275 pounds. All participants must be able to walk 15 minutes uphill and be able to climb a 20 foot ladder unassisted. This tour is not suitable for guests with heart problems, epilepsy, balance problems, asthma, disabilities, pregnant women, or those with back, neck or shoulder problems. This tour is not wheelchair accessible.