Day 1
Arrival + Dadonghai
Settle in, easy walkable beach.
Afternoon: Check in, swim at Dadonghai Beach. Evening: First-night Hainan seafood at the Chunyuan seafood square (buy fresh, they cook it).

4 days · relaxed pace
Four days of Hainan sun — resort bays, an island snorkel trip, duty-free shopping, and seafood night markets.
Day 1
Settle in, easy walkable beach.
Afternoon: Check in, swim at Dadonghai Beach. Evening: First-night Hainan seafood at the Chunyuan seafood square (buy fresh, they cook it).
Day 2
The flagship resort beach.
All day: Yalong Bay — calm turquoise water, watersports, beach lounging. Evening: Sunset cocktails; optional Atlantis Aquaventure if travelling with kids.
Day 3
Snorkel + clear-water day trip.
Morning: Ferry to Wuzhizhou Island; snorkel or glass-bottom boat. Afternoon: Coastal walk + swimming. Evening: Back to town; Sanya night market for tropical fruit + coconut chicken hotpot.
Day 4
Shopping before the flight.
Morning: Haitang Bay duty-free mall (world's largest single duty-free store). Afternoon: Depart from Phoenix Airport (SYX).