A large brunch is easier to enjoy when the host plans for more than the reservation itself. A birthday meal, office gathering, or family visit may involve staggered arrivals, different dietary needs, uneven appetites, and guests who have not met before.
Someone may want coffee before ordering, while another person has to leave by a fixed time.
Searching for the best brunch for large groups is a reasonable starting point, but the room and menu are only part of the decision. The host also needs to consider seating, service pace, conversation, payments, and how the final guest count will be confirmed.