There are 3 different ports. We went from the international terminal, not Tuan. This is near to sun world.

It is best to stay in halong. Travel to halong, stay in hotel for 2 nights. First afternoon you can take cable car and then enjoy one of the many superb seafood restaurants in Halong. Hotel can book a full day cruise the next day (much longer cruise than day trip from Hanoi or even 2 day 1 night cruise) more seafood and back to Hanoi thế next day. You will see more and it will probably be cheaper than a 2 day 1 night trip. I can recommend the Alex hotel in halong.

Hi, I remember our hotel staff saying its open on all days, we ourselves had visited on a Saturday. Points to remember, it gets shut by 8 pm, the best time to go is around 2-3 pm. Again the Hotel staff said the best place to get the tickets were at the counter. The online price at Trip Adviser is more expensive by 25% as I believe they are giving you round transfer also. Do get the combined tickets with the cable car and visit the Mystic Mountain complex too(Ferris Wheel, Toboggan, Great Views, Cable Car, Gaming Arcade).

Weekdays 3pm to 20:30 for the lower part. The upper part is open for Business till 10:30pm