Even though I advised against it, I do think the ironing would work on the creased areas. 98% chance it would reduce the creases with no issues. It’s just the other 2% that makes me question if the risk is worth the reward. Simply framing and matting will indeed help, as mentioned above.
The other thought I just had was steaming. I know they make all types of portable Steamers... many that fit easily in a suitcase. My wife often travels with one.
Steaming might be a good alternative that’s less intrusive than ironing. I actually don’t know of any downside, as it works very well on my dress shirts.

Anybody here have good experience/input with steaming vs. ironing?