The big things that I wish I would have done, if you haven’t already, is making sure to reach out to those that are going to be writing your letters so that they know they will be getting a request once the application opens. It may also be beneficial to lay out all of the experiences that you plan to include on your app, how many hours you’ve spent in them, your explanations for each of them, etc. This may all be common knowledge that people already do... but I was pretty unprepared going into the app cycle and then ended up applying ED so I was very pressed for time. Also, if you know where you’re going to apply, you can start working on any school specific essays so that those are already completed by the time the apps open. Just some things I wish I would’ve thought of before last year... would’ve saved me a ton of stress! Whatever you decide to do, good luck this cycle!
Also.. I’m not sure on the prompt for this year. Wish I could help you with that..