From the organizer:

All mothers received complimentary admission for a self-guided tour on Mother's Day. Accompanying guests pay regular admission prices —$19 adults 18+, $9 youth (3-17), children 2 & under, free — which includes a self-guided tour Manor House, gardens, Conservatory and Gate Lodge.

Molly's Shop is stocked with great gifts for Mom!
All tours are self-guided on Mother's Day.