This invention relates to the methods of coordinating product and service demonstrations. An event coordinator directs event operators to conduct a product or service demonstration event. The event coordinator provides event operators with cards, such as debit cards, credit cards, or smart cards, to purchase items needed for the demonstration. The event operator contacts a card administration system to activate the card. The card administration system verifies that the provided card ID and event ID are valid, and associates an authorized budget of the demonstration event with the card. The event operator then purchases items with the card, and conducts demonstrations.