Well, the cruise in itself was very beautiful: the view was amazing, especially the planes about to land right over the cruise boat looks magnificient live but we have experienced some issues that are important to mention.
First of all, OBS! VEGETERIANS - don't expect to get a great variety of dishes on this cruise. Though it stands that the vegeterian option is available and must be ordered in advance, we have still been quite disappointed. On our tour the only available vegeterian food was bread, some cooked vegetables, plain soba noodles with some unknown sauce on the side ingredients were written in Japanese so we didn't risk to try it, even with Google Translate and some desserts. We don't know if it's Viator that hasn't provided the company with our reservation of vegeterian meal or the company itself that has made the decision to include very few vegeterian options but just be aware of this probability when you book this tour.
And secondly, all the staff spoke in Japanese only so we had no idea what the safety on board rules were, for example. It was also impossible to find out what kind of dishes were available at the buffet, even when we asked the personnel.
Apart from this, it was a cozy tour and you should definitely try to go up to the top deck and enjoy the view there.