There are a few guided activities that most people are unwilling to be cheap about: skydiving, scuba lessons, and boat tours. With all of those activities, you want a trusted professional holding the wheel if things go wrong, and reasonable tourists are typically willing to fork up the cash to ensure the safety of themselves and their families. Not this man.
In this case, one tourist with an enormous family of 22 people, had booked a snorkeling boat tour with a budget-friendly, family run business. As a small business owner, OP could smell the deal-grubbing nature of the man from a mile away, fending off his requests for a discount, free upgrades, and his overall entitled behavior, but the biggest red flag was that the man insisted on paying cash in person for his tour. Generally OP got credit cards on file as insurance, but let it slide this time.
After confirming the booking with the man and his family for the whole day, OP drove the boat to meet the man and collect cash to cover his event fees. Immediately the cash-only guy started making excuses and claiming he didn't want to pay before their tour and the guide quickly put him in his place. Keep scrolling for the full story of how this boat operator wouldn't take any nonsense from coupon clutching customers.
For more audacious tales of customers gone wrong, check out this server-certified collection of the craziest restaurant requests.