Some tours include an activity that requires travelers to sign a waiver in order to participate. In order for a child under the age of 18 to participate in this activity, the Group Leader needs to be authorized to sign the waiver on their behalf. Agreement is completely voluntary. If permission is not granted, the child will not be allowed to participate in any activity that requires a waiver. If you're unsure whether your tour requires this form, please contact Traveler Support at 888-333-9756.