Venus Cruises is a 29-cabin luxury ship sailing the quieter waters of Lan Ha Bay, and this day trip gives you its best hours on the bay without the overnight stay. After pickup in Hanoi's Old Quarter and boarding at Tuan Chau by tender, you have lunch as the cruise sails deeper into Lan Ha Bay. In the afternoon it anchors in the Dark and Bright Cave area, where you explore the cave by bamboo boat, then you enjoy a sunset party on the sundeck as the cruise returns to Tuan Chau, before the drive back to Hanoi.