GMA IS EVENT FOCUSED GMA offers a variety of enjoyable events designed to keep members informed in a consumer retail industry where change is constant. Dinner/Luncheon meetings covering timely subjects. Companies that have spoken to the gma audience in the past include: Central Grocers Inc. Costco Warehouse Club Jewel - Osco Mariano's Meijer Stores Roundy's Supermarkets Strack & Van Til Social activities that encourage opportunities to entertain clients and network with trade professionals. A published directory of all members designed to inform and enhance network activity.