When you book a double, 40 people is the maximum number of guests that will comfortably fit into our 2 lab rooms. Infants (children under 1) do not count towards this total. If you would like to bring more than 40 guests, each additional guest will need to pay the full price of museum admission, regardless of membership status. We may be able to accommodate a larger party with all three of our lab rooms, depending on the date and time of your party.