Promotional value expires 90 days after purchase. Amount paid never expires. Subject to availability. Closed Toe shoes required. Tours require a minimum of two participants. Minimum weight 100 lbs and maximum weight 260 lbs. Helmet is included. Younger than 18 must be accompanied by guardian. Reservation required. Limit 1 per person, may buy 1 additional as gift(s). Valid only for option purchased. All goods or services must be used by the same person. May be repurchased every 30 days. Limit 1 per visit. Must be 14 or older. Merchant's standard cancellation policy applies (any fees not to exceed voucher price). Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.