I don't think that the "current state of tensions" should be brought up at all, then you are making it an issue when it might not have been. Planes can be scary. If you are religious you really might need to pray for the sake of feeling peaceful. If I needed to I could do it in my seat. But they do it differently. If it was me, I'd want to know if there was enough room on the floor that they could be there, and still have an FA be able to walk around them and not be blocking the lav to the other passengers. Could they do it one at a time to take up less space? How long will they need? If it's 2 minutes, that's probably not a big deal. If it's 20, that is a big deal. I don't think that other passengers feelings or concerns should really be a factor. Some people are so ridiculous that they don't even want to be on a flight with muslims. Some people don't want to be on a flight with kids. Some people don't want to sit next to an old chatty person. Unless you can afford a private jet, you as a passenger, have an obligation to just be a civil and decent person and not cause any problems. The last plane I was on, I had to spend some time on the floor of the lav to change a diaper. It's not easy, and I felt very unstable. I'd imagine it's worse in the more open area, so I would warn them that they might get hurt if they are on the floor while there is turbulance. But I certainly would not tell them that they can't because it would make others uncomfortable. That does bring up the question though, if the pilot did say it was ok, and they did get hurt, with or without being warned, could they hold the pilot or airline responsible, as it is "the pilots duty to ensure safety."??