I’m a bit confused, as I can’t tell if this is supposed to be a presentation explaining what TTRPG are or an introductory one-shot type of mini-game. The “Include as few or as many rules as you think are necessary.” statement leads me to believe it’s the latter, however, I don’t think “The experience should run no less than 10 minutes and no longer than 30.” is very realistic.

Half an hour is NOTHING even for a game of veterans, that already know what TTRPG are and how they’re played, and thus have a smoother and faster gameplay pace. Spending only 30 minutes in a game that is supposed to introduce someone NEW to the game is simply impossible, as you’d need to not only engage them in the game and story, but also spend some time having to explain some of the basic mechanics and rules as the game went along, which always slows down the pace a bit.