All group ticket sales are final and the 20% deposit is non-refundable. To qualify for a group discount, a final count must be provided 2 weeks ahead of time and payment secured in a single transaction. Refunds will not be issued if a group shows up with fewer 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.