How to properly organize the check-in registration of visitors to various establishments?

Question

Marketing

The essence of the task is as follows:
There is a group of tourists, of different age groups, descending from the cruise ship to the island. At the exit from the trapp they are met by beautifully dressed promoters and presented with a brochure with a rating of the island's establishments and attractions, a numbered discount card with a magnetic strip is attached to the brochure, giving discounts and gifts in participating establishments.
There are about 300 participating establishments on the island that are willing to pay a fixed commission for a referred customer with a card.
Problem: How to inexpensively organize accounting (tracking) of these buyers so that partner establishments do not deceive and do not underestimate the numbers?
90% of customers pay with credit cards, establishments have completely different accounting programs and terminals from different banks, many passengers of liners are pensioners and are unlikely to download any application and check in. That is why the idea arose to give a live plastic card.
What ideas?

Answer 1

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