Morning: Bai Dinh
Pick-up between 7:00 and 7:30 from the Old Quarter hotels and the Opera House area, then the road south. Bai Dinh is large and takes the morning to walk; the electric cart inside the complex is an optional extra.
Lunch · Lunch included
A set lunch at a restaurant at about 12:30.
Afternoon: Trang An
From 2:00 pm a rowing boat takes you through four caves, stopping at Suoi Tien temple and the Vu Lam palace on the way. Leave at about 4:30 pm and reach Hanoi by around 7:30 pm.
Times are a guide: traffic and the sailing or opening schedule on the day can move them a little.