Cancún

Prioritise Museo Maya de Cancún & San Miguelito ruins, El Rey archaeological site, Nichupté lagoon at sunset, Mercado 28 in downtown and Isla Blanca sandbar. What you can skip without regret: the restaurants with photo menus and touts on the main square, any hop-on bus if the centre is walkable, and paid "panoramic" viewpoints when a free one gives the same picture. You also have coastline within reach of Cancún, so keep one morning free for a beach or a coastal walk.

Stay inside or immediately beside the historic centre of Cancún: you walk to the main sights, restaurants stay open late nearby, and you avoid paying for taxis twice a day. Pick the edge of the old town if you want quiet at night, and check the room faces a courtyard rather than a bar street.

Use the scheduled airport bus or regional train for the cheapest transfer into Cancún, an official taxi from the marked rank when you arrive late or with luggage, and ignore anyone offering a private transfer inside the terminal. In Mexico (Quintana Roo), ADO coaches link the whole coast cheaply; colectivos run Playa–Tulum all day; hire a car only for Bacalar, Valladolid and Chichén Itzá, and carry pesos for the toll road

2 full days is the honest answer for Cancún: one for the centre on foot, one for its museums and food, and one for a trip into Riviera Maya. Two days works if you only want the highlights; a fourth day is worth it if you want a slow morning and a longer excursion.

Budget $120–180 per person per day mid-range: $45–60 food, $20 transport, $35–60 excursions and cenote fees. Accommodation moves the total most: shoulder season in Cancún can be half the July price for the same room. Payment runs on the Mexican peso (cards in hotels and restaurants, pesos for beach kitchens, taxis and cenote entry).

Day 1 — the historic core of Cancún on foot, clockwise from the main square, with lunch where you end up rather than walking back. Day 2 — the single biggest sight first thing, then the market and the residential streets around it, and a viewpoint at sunset. Day 3 — one excursion into Riviera Maya booked in advance, back for a late dinner. Group everything by walking distance and never cross Cancún twice in a day.

Anything with timed entry or a small group sells out first: the flagship monument or museum of Cancún, guided tours with fewer than fifteen places, boat and wine experiences in summer, and dinner at well-reviewed restaurants on Friday and Saturday. Book those two to four weeks ahead in high season; everything else can wait until you arrive.

The classics are the same everywhere: unmetered taxis quoting a flat fare, "free" bracelets or flowers, distraction pickpocketing on crowded transport and at photo spots, card machines handed over pre-set to a higher amount or to your home currency, and restaurants without printed prices. Check the meter, always pay in local currency, and keep your bag in front of you in queues.

In Mexico (Quintana Roo), 10–15% in restaurants, 50–100 pesos a day for guides and dive crews, 20–50 pesos for bellhops. Breakfast until 11:00, lunch 14:00–16:00 and dinner from 19:30; beach kitchens close early, taquerías run late. Cover shoulders and knees inside churches, greet staff before ordering, keep your voice down in residential streets at night, and expect shops in smaller towns around Cancún to close in the early afternoon.

Install Google Maps, Uber (Cancún and Playa del Carmen only), DiDi, ADO for intercity coaches, WhatsApp for every booking. Download an offline map of Cancún before you land, and add your transport card or pass to your phone wallet if the local operator supports it.

Walk two or three streets off the main square or monument in Cancún and look for a short handwritten menu, a full room of local voices, and prices displayed at the door. A daily menu chalked up at lunchtime is the strongest signal; a laminated menu in five languages with a host outside is the strongest warning.

Eat what Riviera Maya grows and lands: the signature rice, stew or grill of the region, whatever the market is selling that week, and the local wine or vermouth by the glass. The most honest versions are in the family-run place near the market of Cancún, at lunch, when the daily menu is on.

Breakfast until 11:00, lunch 14:00–16:00 and dinner from 19:30; beach kitchens close early, taquerías run late. Book dinner for anything popular, ask for the bill (it won't arrive unprompted), and split payment is usually fine by card. 10–15% in restaurants, 50–100 pesos a day for guides and dive crews, 20–50 pesos for bellhops.

Do a single loop of the historic centre of Cancún, stop at its one defining sight, then eat where locals eat near the market. That gives you the character of the place in three or four hours without a ticket queue eating the whole visit.

Free: the highest point of the old town, the bell tower terrace when it's open, and the bridge or promenade that looks back at Cancún's skyline. Paid: a rooftop bar or tower ticket — worth it only if you arrive forty minutes before sunset to get the rail. On the coast nearby, a west-facing cove beats any rooftop.

ADO coaches link the whole coast cheaply; colectivos run Playa–Tulum all day; hire a car only for Bacalar, Valladolid and Chichén Itzá, and carry pesos for the toll road If your 2-day plan is mostly on foot in Cancún with one excursion, buy singles or a multi-journey card and skip the tourist pass; if you're crossing the city several times a day or using it with museum entry included, a 48 h pass pays for itself.

Cancún is safe by European standards; the real risks are opportunistic. Avoid empty industrial or station peripheries after midnight, unlit parks, and packed nightlife streets where phones disappear. Walk lit main streets, use a licensed taxi or ride-hailing app late at night, and share your route if you're travelling solo.

Buy something made nearby: reef-safe sunscreen you will actually use, Yucatecan recado and habanero, vanilla from Papantla, a hand-loomed hammock from Valladolid rather than a beachfront stall. The weekly market in Cancún and a workshop with the maker on site beat any airport shop, and you're supporting the local trade rather than an importer.

Keep two indoor blocks in reserve: the main museum or cathedral of Cancún, a market hall with food stalls, a long lunch, or a thermal bath or wine cellar in Riviera Maya. In extreme heat, invert the day — sights before 11:00, indoors from 14:00 to 18:00, and the evening back outside.

Locals go where there's no ticket desk: the residential lanes just outside the walls of Cancún early in the morning, the neighbourhood bar with four tables and one dish, the cemetery or convent garden that nobody photographs, and the hill road out of town at dusk. Ask the person serving you coffee where they eat on Sunday — in Riviera Maya that question opens more doors than any list.