to be honest, I don't really understand all the ridicule for the video. While I agree with most that Disney has done a poor job promoting this or showing anything that looks groundbreaking, I also think that most reactions tend to be way over the top in terms of criticism.
Specific to the video, I thought the ship interior and deck looked okay but nothing special. I didn't think it looked particularly impressive but it didn't strike me as bad either, just "there". The bar and musical number was about the same - not something that would make me want to book, but perfectly acceptable and understandable as part of the offerings for the cruise. I mean, there should be drinks and live entertainment so I get showing that off as something included at the experience.
Same thing with the captain. Pretty much about what I would expect - a reasonable, practical "alien" that would be appearing live. Maybe the uniform could be more interesting but it's fine.
Where I think Disney has failed is not that anything they have shown is bad except the light saber training (though it might be better in person, who knows), but nothing has been inspiring or seem worth of the large price tag. Like, it's all stuff that should be there as filler, but nothing that would actually be the draw. So either they are hiding some big exciting things that will make this worthwhile relying on surprise and word of mouth (rather than official promo pieces) or they have made a subpar experience. Given Disney recent track record, I know what I think the case is here....