My wife did not let me include this in the video 🤣 she said it was too nerdy and that we would loose all the viewers. But the Royal Caribbean cruise ships have two different lighting systems on the boat. NTSC that are working with camera settings of 30, 60 and 120 frames per second. This is what is topically used in America, and in all the main areas of the cruise. Then in the restaurants they have PAL, this is the system that is mostly used in Europe, and works for 25, 50, 100 frames pr second and so on, and also what is used in the restaurants of the cruise. This is why you see the flickering on the camera in the restaurants. You can only edit with one frame rate in the software. You may be able to change it and film with the two different setting in the camera, but I did not do that. So thats an explanation of the flickering.