You don't need a script. Just make a common event that runs on parallel process. In this, all you need is to have something checking if the skit button is being pressed and whether the conditions are met for it - then you can just run the skit using Show Picture commands. You would also need to use Show Picture to notify the player when conditions are met.
It may take some time to setup, but even with scripting there is little you could do to reduce the amount of time you would need to configure it. This is something which is way better to do with events.