I actually had a fellow become angry with me for using my phone in the MDR. And told me so a few times. He stated that we didn't have to honor Carnival technology by agreeing to use our phones. Quite the speech he gave us.
You took a few hits when posting this, raised a few hairs in the process. Never bothered showing back up when the flames started. Thats the sign of a smart poster. I've read a few thousand topics like this on this site. Always the same few with the same reactions.😁