“Vending stand” means:
1. Such buildings, counters, shelving, display and wall cases, refrigerating apparatus and other appropriate auxiliary equipment as are necessary or customarily used for the vending of such articles or the provision of such services as may be approved by the commission and the governing body having care, custody and control of the property on which the vending stand is located;
2. Manual or coin-operated vending machines or similar devices for vending such articles, operated at buildings, terminals and parking facilities owned or leased by the commission, even though no person is physically present on the premises except to service the machines;
3. A snack bar for the dispensing of foodstuffs and beverages; or
4. Portable shelters which can be disassembled and reassembled, and the equipment therein, used for the vending of approved articles, foodstuffs or beverages or the provision of approved services.