Travel To Halong Bay, Vietnam - Five Helpful Tips

Ha Long Bay is the one of the leading destinations in Vietnam, attracting many domestic and foreign tourists each year.
If you're exploring here, let's refer to the advice of a foreign travel blogger - Mary, as well as Vietsky Travel's experience, sharing after traveling to Halong Bay, Vietnam

1. Spend at least two nights on the bay
   
   I cannot emphasize this enough! The one-night (or day trip) tours BARELY scratch the surface of Ha Long Bay. You barely go into the karsts, and then come right back out. With the extra night (or more, if you can!), you’ll see so much more of the bay and actually sail down into the meat of it. Especially since you’ll likely spend four hours driving to and from the bay, it’s really worth it to spend two nights!
   
   
   
   
    (Morning in Halong with Taichi exercises - Vietsky Travel's tip for Halong Bay trip)

2. Go to Cat Ba Island

   This is another reason to spend two+ nights: you can go to Cat Ba Island! In contrast to the negative review in Lonely Planet, we really enjoyed our time on Cat Ba Island. We had a free afternoon to hike up to the Cannon Fort, which may be our favorite part of the entire tour. The view is spectacular! If you’re not into hiking, you can get a motorbike to drive you up — or spend the afternoon at the beach!
   
   
   
   
    

3. Know the safety information about your boat

   Hopefully this won’t be an issue, but there was a serious accident a few years ago that killed 12 tourists. Since then, I believe most boats have started keeping hammers (for breaking windows) in the bedside tables. Make sure you know where yours is, where the lifejackets are, and where you should exit if you need to! Also be smart when you’re kayaking — there are so many big boats around that can’t change course easily, so don’t get in their way!
   
   
   
    
   (Choose a trustworthy brand to receive safety and comfort during the trip)

4. Climb something

   You’ll likely have a few opportunities to hike up to the top of an island. DO IT! The views from the top are incredible! If you’re actually staying on Cat Ba Island for a few days, or in Bai Tu Long Bay, you could also check out the rock climbing opportunities. I wish we’d had more time to climb!
   
   
   
    (Tourist climbs mountain in Cat Ba)

5. Talk to your guides

   Most of the guides in Ha Long Bay speak English quite well. We took this opportunity to chat with them about their life in Vietnam — from their families to their education to their views of the Vietnamese government — and learned a lot. You’ll have plenty of hours to cruise around the bay without much to do but take in the scenery, you might as well chat and learn about the culture you’re visiting!
   
   
   
    (Visiting fishing villages in Halong to learn about the daily life of local fishermen)

Source: The Kitchen Paper.