Can’t fault the cruise or the staff who were brilliant..
But if you get up early to marvel at the views of a world UNESCO heritage site your going to be extremely disappointed and annoyed to see a HUGE amount of floating rubbish deposited by boats of all kinds including the boats that brought you there..!!
We did see one small boat attempting to clean up some rubbish with a small net with very little impact.
Please Vietnam look after your UNESCO site a lot better than you are.