Promotional value expires 120 days after purchase. Amount paid never expires. Registration required. Limit 3 vouchers per workshop. Must complete online liability waiver. Projects will not be available for same-day pickup. Valid only for individual workshops or small group workshops of up to 3 people; not valid for groups larger than 3. Not recommended for expectant mothers. Valid only at the Portland location. Advance online reservations required. Subject to availability. Valid only for option purchased. Merchant's standard 48-hour cancellation policy applies (any fees not to exceed Groupon price). Must be 9 years or older to participate. Glassblowing not recommended for expectant mothers. Limit one voucher per group. Limit 3 per person. Limit 1 per visit. Must use promotional value in 1 visit(s). Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings