Share your first mobile app store deployment stories 🚀

I'd love to hear other people's stories about their first mobile app deployment to the Google Play Store and/or the Apple App Store.

How'd it go?
What issues did you run into?
What was surprisingly easy?
What would you do differently to prepare next time?
or anything else you can remember!

Reason why I'm curious: I'm a web dev working on launching my first mobile app and have just started looking into all the steps and requirements for deploying to the app stores. I can't tell if it's more involved than deploying a web app, or if it just feels that way bc it's new 😆