It was a very amazing experience, even if the weather was a little foggy and we couldn't clearly see the Bay. But the group is really nice and orderly. We had so much fun taking pictures and videos. The tour guide was very knowledgeable, spoke good English, and was very funny that helped the travel even if it was long. 2 hours didn't seem long. I will definitely come back to Halong Bay in summer season to see the Bay more in clear weather.