DL"Z means one does so regardless of knowing the facts, or even of the facts themselves. DL"Z means doing so with no if's when's or but's. I am saying this to myself too.
That is true, but if it was a verifiable fact that things were as reported, the DL”Z would have been of a different nature, perhaps that it was better to serve matzah because some of the clientele would otherwise eat Chametz , or not have the exposure to an environment that they could grow from etc. This would have been DL”Z yet would not have been a ringing endorsement of the kashrus standards.
I was going to leave it at that, but seeing as to how the experience is being cast as being lechatchilah and perhaps more kosher than ones own kitchen, I would like to be clear that there is much to say beyond the kashrus of the food, and I’ll just discuss one aspect. The mode of dress of some of the clientele clearly leaves much to be desired, making spending Passover in such a place bidieved for clear halachic reasons other than the food. ( There may be reasons that upon carefull consultation with ones rabbi would perhaps make it lechatchila for some despite this- illness, family, kiruv, etc.) It is not somewhere I, or many others I know would consider a kosher environment, since kashrus extends to all areas of Halacha.
The Rabbis who supervise these events are obviously doing it for the mitvah of supplying kosher food, parnassa,etc. and not because it is the ideal environment they would prefer that they or their families would want to be in. (Rabbi Leibel Miller does kosher cruises as well- they are a small kosher part of regular cruise ships and have their own tznius compromises as is well known). Obviously a cursory glance through many of the trip reports etc. on DD will make it clear that many of the destinations discussed on DD have significant halachic issues regardless of how kosher the food is. At one point I had to be in Miami and went to one of the attractions discussed on the forums that seemed pretty innocuous, but quickly realized that I made a huge mistake tznius wise and had to leave.
My error was specifically in extrapolating from the other aspects to the kashrus standards of the food when I should have been DL”Z in this area.