155 km from Hanoi, about 2 hours by bus on the highway, Ha Long is known for its emerald waters and thousands of towering limestone islands topped by rainforests. You can easily to book 2Day1 Night trip on cruise ship for about 3.5 mil/ pax
95km from Hanoi, Ninh Binh, is one of Vietnam’s most striking destinations. Breathtaking boat rides and lush countryside are just half of the appeal. Just 1 click on the internet you can find many options of 1 or 2 day tour from Hanoi to Ninh Binh or you can book directly at your hotel
Sapa is a mountain village in Lao Cai, a place of natural beauty, with cascading rice terraces, misty valleys, and majestic peaks. It is also a cultural hub, home to several ethnic minority groups with unique customs and traditions. Bare in mind that the wedding is taken place in Yen Bai city, where in the middle between Hanoi and Lao Cai, so you can either easily visit Sapa before or after the wedding. It's 186km from Sapa to Yen Bai, which is total about 3 hours by bus. If you travel directly from Hanoi to Sapa, It's 315km, about 5 hours by bus