Vieques

Yes — Vieques is one of the safer corners of Puerto Rico. Violent crime against visitors is rare and the island feels sleepy after dark. The realistic risks are petty theft from rental cars left at beach trailheads (don't leave anything visible) and the everyday hazards of driving unlit dirt roads at night. Solo travelers, couples and families all report comfortable trips, and locals are accustomed to and welcoming of tourists.

Plan on at least four nights. You need one overnight just to do the bioluminescent bay, and ferry or flight logistics eat a half-day on each end. Five to seven nights is the sweet spot — enough to rotate through the refuge beaches at Caracas, La Chiva and Playa Negra, do a bio bay tour on a dark-moon night, and still have downtime. Stays longer than ten nights start to feel slow unless you've come specifically to switch off.

Mid-December through April is the prime window — dry, breezy, calm seas and reliable beach weather. May and early June are an excellent value shoulder: prices drop, crowds thin, water is warm and the bio bay starts to peak. Hurricane season runs June 1 to November 30, with August through October the riskiest months for tropical storms and the rainiest stretch. February and March have the lowest rainfall of the year.

Two practical options. Drive or shuttle to the Ceiba ferry terminal (about 90 minutes from San Juan) and catch the passenger ferry — roughly 30 to 50 minutes and $2 each way, but tickets can sell out. Or fly: Vieques Air Link and Cape Air run small-plane hops from Ceiba (about 8 minutes, $40–$110) and from San Juan's Isla Grande or SJU itself (about 25 minutes). Rental cars cannot ride the ferry.

Yes, and it's the single best reason to come. Mosquito Bay is Guinness-certified as the brightest bio bay in the world, and the dinoflagellates glow with every paddle stroke, every fish, every hand in the water. Book a clear-bottom kayak tour on a new-moon night for the strongest contrast — moonlight washes the effect out, which is why operators skip the three nights around each full moon. The experience lasts about ninety minutes on the water.

It's mid-range for the Caribbean and notably cheaper than St. Barts, Anguilla or the BVI, but more expensive than mainland Puerto Rico. Budget travelers can sleep at guesthouses from $80–$130, eat at food trucks and the colmado, and get by on $110–$140 a day. A typical mid-range couple spends $200–$300 a day including a Jeep rental, restaurant dinners and one bio bay tour. Villa-and-driver luxury can run $500+ a day.

Almost certainly yes, and you want a Jeep or other 4×4 rather than a sedan. The best refuge beaches — La Chiva, Playa Negra, the quieter coves of Blue Beach — sit at the end of unpaved tracks that bottom out low-clearance cars. Public transit barely exists; shared 'públicos' run between Esperanza and Isabel Segunda but don't reach the refuge. Reserve at least a month ahead in high season because the small rental fleet sells out.

Bring both. Card payments work fine at most restaurants, guesthouses, dive shops and bio bay operators, but beach kiosks, food trucks, small colmados and some bars are cash-only. Power outages still happen on the island and they can knock card readers offline without warning. A few hundred dollars in small bills covers most trips. ATMs exist in Isabel Segunda but lines can be long and machines occasionally run out.

Esperanza for first-timers — you can walk to dinner, bio bay tours meet there, and Sun Bay beach is a short stroll. Isabel Segunda is quieter, closer to the ferry and a little cheaper. Pilón and the hills above Esperanza suit couples renting villas with pools. Bravos de Boston and Puerto Real work for vacation rentals where you want sand or stillness rather than the Malecón scene.

Culebra has the more famous beach (Flamenco) and is easier as a single-day trip. Vieques is five times larger, has more restaurants, the wildlife refuge and the bio bay — and almost requires an overnight to be worth it. Most travelers who can only choose one pick Vieques for variety and the bio bay; couples and snorkelers prioritizing the best single beach pick Culebra. With a week, do both via the Ceiba ferry.

Easily — they roam everywhere. The Vieques horses descend from Spanish colonial stock and now run free across the island, grazing on roadsides, refuge access roads and beaches like Sun Bay and Caracas, particularly at dawn and dusk. They are not a staged attraction and not pets; don't feed them, don't try to ride them and give cars right of way at night because horses on unlit roads are a real driving hazard.

Three things: Mosquito Bay, the brightest bioluminescent bay in the world; the Vieques National Wildlife Refuge, the largest in the Caribbean and home to the island's best undeveloped beaches; and the wild horses that roam free across the entire island. It's also known historically for the 60-year U.S. Navy occupation that ended in 2003, which paradoxically protected most of the coastline from resort development.

Fresh local fish — snapper, mahi, lobster — is the through-line. Try El Quenepo on the Esperanza Malecón for the island's serious tasting menu, Bili upstairs for harbor-view mofongo, Duffy's for sunset mojitos and fish tacos, and Coqui Fire Cafe in Isabel Segunda for Caribbean-Mexican fusion with house-made hot sauces. Don't skip the food trucks on the Malecón for pinchos, empanadillas and rice-and-bean plates at a quarter of restaurant prices.

Almost never by Caribbean standards. Even in high season the refuge beaches feel uncrowded — Sun Bay can have thirty people on a mile of sand, and La Chiva or Playa Negra often have a handful. Cruise ships don't stop at Vieques, and the ferry's limited capacity caps day-tripping. Show up at a refuge beach by mid-morning and you're often choosing between coves rather than fighting for one.

Vieques itself is more day-trip-from than day-trip-to. Realistic options once you're based there: a snorkel or sail charter to nearby Cayos de Cabra and offshore reefs, the bio bay at night, a full-day refuge tour combining Caracas, La Chiva and Playa Negra. From mainland Puerto Rico, the bigger trips are El Yunque rainforest, Old San Juan and the Fajardo coast — better done before or after rather than as same-day trips.

Yes, with caveats. Calm beaches like Caracas and Media Luna are excellent for younger kids — shallow, shaded, easy parking. Wild horses and the bio bay are genuine-wonder experiences. Limits: kids under two years old usually can't do the bio bay tour, restaurants on the Malecón are open-air and noisy, and the island's quiet and lack of organized 'kids' clubs' won't suit families who want a resort with pools and activities scheduled to the hour.