Ohh, Disney rides love them some morality (unlike the company).
Ummm, Avatar Land rides generally have an environmentally friendly message.
Kilimanjaro Safaris back when it opened had a poachers storyline that resulted in the death of a mother elephant and seeing the carcass. Ya, that didn't last long, but it certainly had a message to send.
Splash Mountain also has the message of appreciating home.
Literally all of EPCOT Center was about the importance of conserving our future and education.
I found that Disneysea rides both showed the benefits but also the dangers of exploration. With Tower of Terror, the recklessness of Harrison Hightower's exploration resulted in his death. With Journey, our exploration of an unknown land results in us finding dangers we weren't equipped for.
It's a Small World has the message of uniting our world ala world peace.
Ya, that's all I got for Disney
However, Six Flags has some amazing messages through their fantastic DC rides.
With Green Lantern, we stand up against evil. Very, very clever and a beautiful message to stand up against evil. (I'm unsure if you get the stand up section though. The Six Flags Great Adventure version is a stand up roller coaster. It's very clever)
I actually dislike the mixed messages of the Justice League rides. For some reason, we are fighting Lex Luthor despite him obviously being the hero. If this takes place in the DC Cinematic Universe that is. Both Superman and Batman in the films are murderers. Batman killed dozens of henchmen. Superman killed millions of people when he destroyed Metropolis in Man of Steel. I personally was cheering on Lex Luthor, a smart billionaire businessman who could make Metropolis great again, who is looking for his city's best interest. He personally saw the death and destruction caused by these heroes. One might say that superheroes are needed to fight supervillains. I argue these superheroes created these supervillains. Before these "heroes" arrived, cities had some crime, yes, but they didn't have constant occurrences of villains terrorizing millions. Therefore, I envision Lex Luthor as the true hero of the DC Universe. I do hope one day he could win, but, alas, Six Flags continues to send odd messages letting the villains Batman and Superman win.
With The Joker rides, they, um,