Brazil
An island with three different trips on it — oysters, surf, Azorean villages, and the house you split eight ways.

Currency
BRL
Language
Portuguese
Best months
March–May and October–early December (warm water, none of the January gridlock)
Mid-range budget
$
120
/ day
Florianópolis is an island with a city bolted onto the north end of it, and the gap between those two facts is the whole trip. On paper it's the capital of Santa Catarina, 440,000 people, a bridge, an airport. In practice it's 54 kilometres of Atlantic coastline with more than forty beaches on it, and the one on the east side with the surf has nothing in common with the one on the bay side where the oyster boats go out. Portuguese settlers from the Azores arrived here in the 1740s and built white houses with blue window frames in fishing villages that are still fishing villages, still making bobbin lace, still landing mullet in nets pulled by hand every winter. Then the surfers found the east coast, the Argentines found January, and the tech companies found everyone else.
What makes it a great group trip is that it's built for a house. Nobody comes to Floripa and books four hotel rooms — you rent somewhere with a kitchen and a yard in Campeche or the Lagoa, you do one enormous supermarket shop, you cook most nights and you go out for the one that matters. The island produces more than 90% of Brazil's oysters, so the meal that matters costs a fraction of what it would anywhere else. The trails are free, the lagoon is free, and the best afternoon here is a walk to a beach you can only reach on foot. Just choose where you sleep with real care. On this island that single decision quietly decides everything else.
A 10% service charge is usually printed on the bill as taxa de serviço. It's optional by law and almost everyone pays it, so the honest answer is: leave it unless the service was genuinely bad. Beyond that nobody expects anything. You don't tip a beach vendor, a taxi, or a bar where you paid at the counter. What you do want is Pix, Brazil's instant bank transfer — it's free, it clears in seconds, and half the island prefers it to a card. Kiosks, boat operators and the man selling grilled cheese on the sand will all show you a QR code. If your bank can't do Pix, carry more cash than you think for the south of the island, where the card machine works right up until the moment it doesn't.
Florianópolis is one of Brazil's easier cities to be a visitor in, and almost everything that goes wrong here is petty and preventable. Theft clusters exactly where you'd guess: crowded beaches, the nightlife strip at Lagoa da Conceição, and bus terminals — and above all, while you're in the water. Take one bag to the beach, leave the passports at the house, and don't build a pile of phones on a towel while six of you swim. December to February the crowds thicken and so does the opportunism. One specific scam worth naming because it targets exactly our readers: at Praia Mole and the nightlife beaches around it, drugs get planted near a tourist's things and a supposed police officer appears demanding a payment to make it go away. Real officers don't work that way. Stay calm, don't hand over cash, ask to go to a station.
The genuinely underrated danger isn't crime, it's water. Praia Mole, Joaquina and Barra da Lagoa face open ocean and carry strong rip currents, and they take confident swimmers every summer. These are surf beaches. Read the lifeguard flags, swim between them, and if you're pulled out, go sideways along the shore rather than fighting straight back in. The bay beaches on the north and west — Jurerê, Canasvieiras, Santo Antônio de Lisboa — are the calm-water alternative, and there's no shame in choosing them.
An eSIM (Airalo, Saily) set up before you land is the least painful option, and coverage on the island is good everywhere except a few pockets in the south hills. Otherwise Vivo, Claro and TIM all sell prepaid chips — bring your passport and CPF-free tourist option, and expect the shop to want twenty minutes. If one person in the group has data, that's genuinely enough: everything here runs on WhatsApp and the boat guy will message you.