I don’t understand your post. Who “made a big deal of being married”? Not my friends, that’s for sure. And I know, because on several occasions we checked into the same hotel at the same time, as we were all vacationing/attending conferences together.
I beg to differ with your comment that carrying a copy of one’s marriage license is cause for suspicion. Are you basing that comment on your personal experience living and traveling worldwide with a spouse through Islamic and/or developing countries?
My husband and I can easily produce our marriage certificate at all times. We live/travel in many countries, and don’t have the same last name. While we don’t generally need it, it’s no trouble to have it just in case. From time to time it has been helpful.