What should I avoid in Cozumel?

The stretch of Avenida Rafael Melgar between the Punta Langosta and Puerta Maya cruise piers is designed to separate cruise passengers from dollars in 4 hours flat. Jewelry stores like Diamonds International and Tanzanite International offer "duty-free" prices that run 20-40% above what you'd pay at any US mall. Sales staff work on 15-20% commission and will follow you to the door. Walk three blocks inland toward Avenida 5 and prices drop by half for the same silver rings and embroidered blouses. The plaza outside Punta Langosta smells like warm churros and sunscreen. But the "Mexican vanilla" sold at stands there is often coumarin-laced tonka bean extract, not vanilla at all. Real vanilla costs 180-250 MXN per bottle at Chedraui, the grocery store on Avenida 65.

The island's taxi system runs on posted zone fares rather than meters, but drivers routinely double or triple the listed rate for anyone who hasn't memorized the chart. A ride from the main plaza to Playa Palancar should cost about 250 MXN, roughly $15 USD. If the driver says 500, show the fare chart on your phone or walk to the next cab. Renting a scooter from a shop on Avenida 10 runs 400-600 MXN per day and covers the whole island, though the east-coast road has deep potholes and the wind off the Caribbean hits hard enough to wobble a 125cc bike. Timeshare reps work the arrivals hall at Cozumel International Airport and the ferry dock in San Miguel. The pitch starts with a "free" breakfast or snorkel trip and ends 3 hours later in a high-pressure sales office near the hotel zone. Say no at the first approach. Two firm repetitions of "no, gracias" ends it.

The east coast of Cozumel has warm, copper-colored sand and surf that sounds like distant thunder rolling in. Swimming there can kill you. The currents run north-to-south at 2-4 knots, and the undertow has drowned visitors who waded in past their knees. Chen Rio has one semi-protected natural pool formed by a rock barrier, but even that pool turns dangerous when swells rise above 1.5 meters during hurricane season from June through November. Playa Palancar and Money Bar Beach Club on the west coast have calm, knee-deep water for 30 meters offshore. The reef system there, Arrecifes de Cozumel National Park (protected since 1996), is the other thing to respect. Non-reef-safe sunscreen containing oxybenzone or octinoxate is banned by Quintana Roo state law, with fines reaching 2,916 MXN. Buy mineral-based sunscreen before you arrive or pick it up at a pharmacy in San Miguel. Apply it 15 minutes before entering the water so it bonds to your skin instead of floating off in a milky film.

Hurricane season peaks between August and October. Cozumel sits directly in the Caribbean storm corridor, and the island has limited shelter options once a Category 2 or higher makes landfall. If you're visiting between late August and mid-November, travel insurance that covers weather cancellations is worth the $40-80 premium. Late August conditions run around 32.6°C with 60% humidity, pushing the heat index to 39°C by early afternoon. That wet, clinging heat makes walking between noon and 3pm feel like breathing through a warm towel. Eat lunch indoors and save the exploring for after 4pm. For food, avoid the waterfront restaurants with English-only menus between Calles 2 and 8 on Melgar. A fish taco there costs 120-180 MXN. Walk four blocks inland to Calle Adolfo Rosado Salas where the same taco, made with the morning's lionfish catch, costs 60-80 MXN and tastes sharper because the fish hasn't been sitting under a heat lamp since breakfast.