Most visits can be booked on the spot. A few sell out days ahead. Here they are, stop by stop, with what you can do without booking underneath. Keep the rest of your time free.
2 activities to book · about €185 per person
No booking needed: The karst towers · Surprise Cave (Sung Sot) · Kayaking between the islets · The floating fishing villages
All activities in Halong Bay cruise on GetYourGuide
No booking needed: Cat Ba National Park · The Cat Co beaches · Lan Ha Bay
All activities in Cat Ba Island on GetYourGuideIndicative prices per person, checked when written. The button opens the GetYourGuide search for the activity and the town, on the days of the stop once your dates are known. Some links are affiliate links: we may earn a commission, at no extra cost to you.
€185 per person if you do them all, across 2 bookings. The most expensive is "Two-day, one-night junk cruise" at €150, the cheapest "Boat trip into Lan Ha Bay" at €35. Prices checked when written: confirm them when you book.
7 visits on this itinerary need no ticket or time slot, starting with The karst towers, Surprise Cave (Sung Sot), Kayaking between the islets, The floating fishing villages. They make up most of your days: booking ahead only concerns a handful of sites with limited places.
Halong Bay cruise, with 1 activity to book, against 1 at the quietest stop. That is where slots go first.