Promotional value expires May 31, 2016. Amount paid never expires. Must sign waiver. Registration required. Limit 1/person, 1 as gift. 1/visit. Valid only for option purchased, Monday-Friday. All goods or services must be used by same person. Must be registered and used by 5/31/16. Once reservation is made, voucher is non-refundable. Credit towards a future trip will be given with notice via email no less than 14 days prior to reservation. Cancellation notice must be made via email no less than 14 days prior to reservation. Cancellations less than 14 days of reservation may be subject to a fee up to the price of the Groupon. Trips normally run rain or shine. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings