Dizziness, gas (both ends), foggy vision, sweats.
Happened 2 years in a row, after arriving at the resort. Long plane ride drinking only coffee, arrived in Mo Bay and had a couple Red Stripes on the ride to Negril. checked in and went to the beach. About 20 minutes on the beach, and symptoms started.
Since that time, I've drunk only water on flight, bus ride and arrival at the resort. No more problems. HYDRATE.