Promotional value expires 120 days after purchase. Amount paid never expires. Online reservation required. Limit of 1 voucher per group per day. A separate booking fee of $2.00 per person will be charged at time of booking. All weather cancellations will receive a new voucher to re-book for up to 1 year from booking date. Re-booking fee's will be $10.00 per person on missed trips. Limit 1 per person, may buy 1 additional as gift(s). May be repurchased every 90 days. Limit 1 per visit. Valid only for option purchased. All goods or services must be used by the same person. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.