A food, beverage, bidding box and convention card holding system for mounting on a card table having a card table leg assembly. The system includes a platform for holding beverages and food, a holder for cards used to make bids in the game called contract bridge ("bridge"), a holder for the convention card used in the bidding process in bridge, and a mounting leg that attaches to the bottom of the platform and mounts to the table leg using spring-loaded clamps for easy mounting and removal from the card table. The spring-loaded clamps allow the apparatus to be independently supporting, without regard to the configuration of the card table or the table leg brace or strut.