I'm estimating Stuart's hourly rate at $50 based on his skills in hospitality management, catering, and front office operations, which are in demand in the tourism industry. While his experience is valuable, his location in Kailua-Kona, Hawaii, may not be as competitive as major cities on the mainland. I've considered the average hourly rates for hospitality professionals in the industry, which can range from $30 to $75 per hour, depending on the specific skills and location. Stuart's skills and experience are not as specialized as those of a high-end hotel manager or a luxury resort general manager, so his rate is on the lower end of the scale.