Check in and board a midday overnight cruise—enjoy a seafood lunch as you begin cruising among limestone karsts (confirm cruise schedule with operator).
Ride the long cable car to Ba Na Hills (park hours commonly ~07:30–22:00), walk the Golden Bridge, and visit the French Village and gardens for panoramic views.
Visit the My Son Cham ruins (open ~07:00–17:00) to see ancient Hindu temple complexes set in a jungle valley; it's about 1–1.5 hours’ drive from Hoi An.
Cruise the delta’s canals, visit fruit orchards, bee gardens and coconut workshops; most day tours include a riverside lunch and return by late afternoon.
Check into your resort and head to Long Beach or Sao Beach for swimming and relaxation; many hotels offer late breakfast or luggage hold for early arrivals.
Short morning flight (~1 hour) to Ho Chi Minh City to connect with your international return—allow at least 2–3 hours for international check-in connections.