These images show the Minster Hall with 25 x 6ft. tables. Around each table can be placed 10 chairs, totalling 250 (selected chairs only shown). This seems to be the maximum number of tables and chairs, allowing fire exits to be kept clear (legal requirement) and allowing access to the bar.
Food can be served to all tables.
The 2 - 4 tables nearest the stage would need to be removed to create a dance floor.