Promotional value expires Sep 30, 2015. Amount paid never expires. Limit 1 per person, may buy 1 additional as gift. Subject to weather. Limit 1 per person, may buy 1 additional as gift. Limit 1 per visit. Valid only for option purchased. Gear included, but dress accordingly and bring water, sunscreen, and a towel. Minimum of 2 people per group lesson required or date subject to change. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). Please call 616-889-2416 regarding availability. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.