All group ticket sales are final. All group sales transactions must be made in advance and completed in a single transaction to received discounts. Group sales transactions are not refundable. Refunds will not be issues if a group shows up with less attendees than originally planned. If your plans change after your ticket purchase, you may email groupsales@heritagemuseums.org or call 508-888-3300, ext. 127 to inquire about an exchange to a different available date or time.