The DoD would totally play rpgs growing up, I know realistically it would be Webs to tea h them about it, but young Dune totally would have played during his warrior fantasies, and later with Six-Ckaws in both the army and with the Outclaws. So I'd like to imagine that, when the DoD took interest in one of the scrolls Webs brought back (a how to play guide the older seawing prolly didn't think much of), Dune gruffly but reasonably encouraged them to try it out.
Tsunami would be the DM, but would probably keep getting into arguments with Glory and Starflight. Clay would just want to keep the peace, but he'd have a hard enough time figuring out the game. I think Sunny is very into it, but nobody listens to her, so Starflight ends up echoing her sentiments to keep the game moving. All in all, the DoD probably all get pretty into it, Glory probably lounged nearby during the session 0, watching but pretending not to care, until she quietly joined in the first session, with enough confidence that nobody openly questioned it when she described an intricatly fleshed out edgelord character (think full tween deviantart oc). Starflight was a rules lawyer, but they loved him and if it ever got bad someone would pounce on him and they would keep going. Already touched on Clay and Sunny, but Tsunami probably tried to make everything cool, sometimes for the better, sometimes for the worse when she did a bit too much railroading (She definitely sneaks the plot of the Missing Princess in there). Dune encouraged the DoD to stay with the game, waiting until any fights cooled down before suggesting they try again. There was no overarching story to the 'campaign', but the DoD were young and it was just something fun to do.
Later in life, Sunny decides to try and run a campaign for some students in Jade Mountain. She probably runs a couple different games for different students (at least one of them tries to involve Stonemover, but he's too sad for it), but the one we care about has Kinkajou, who dragged along Moon. Qibli of course came with her. Kinkajou also invited Tamarin, which means Anemone is there, too. Pike tried to follow, but he strikes me as the kind of dragon who thinks dnd is Satan worship, and won't get close.
Thanks to her character development, Sunny is actually a great GM, she's got Thorn's knack for people by this time, and it really helps in this situation. This table is actually pretty awesome. Kinkajou hypes everyone up and keeps them all confident in their choices, Moon is a good mediator of course, and Qibli is a delightful person to play alongside. Anemone sometimes struggles with being the bad kind of power gamer, but she's trying to be better and the group is very understanding. Tamarin maybe doesn't speak too much, but true to life when she does it's deeply impactful. This group does a lot of therapy thanks to Sunny running it, and other than Qibli and Anemone skirting the line, it's very family friendly.
Another JMA group is actually run by Turtle! He's a little nervous to commit to it, but Peril has always wanted to play and convinces him to run a oneshot after Clay talks about playing with his friends. She thinks Clay would like her more if she also understood the game (not knowing he never did), and Turtle used to play with his brothers in huge group games. They end up running drop in oneshots, but most dragons are pretty scared to play with Peril, save for a few. It ends up being very healthy for them, as it helps quiet Turtle branch out, and dangerous Peril get closer to other students. The funniest one is Pike, who as I said before thinks this game is evil. He thinks he is infiltrating the villainous practice to see if it is dangerous to Anemone, but ends up absolutely loving it, in secret of course. The trio ends up playing together more and more often as a way to get better at people together, and Pike becomes much less insufferable. These three get REALLY intense with rp, and eventually welcome a curious and dumbfounded Winter, who wants to learn after hearing about Moon and Qibli's group. These players should hate each other in one way or another, but they have a fun time being really aggressive and intense, and despite feeling intimidated, Turtle has a great time with such a heavy rp game.
Also, somehow through Winter the group ends up hosting a game with Linx and Snowfall, which is a crazy day.