Tone,
Thanks for reaching out! First of all, we always suggest that users backup their database and files before performing any updates, just as a precaution in case anything goes wrong during the update process. After you’ve done that, then the auto-update process from the WordPress Dashboard should be pretty seamless. Your events will remain in-tact, but keep in mind that you might need to make updates to any customizations or template overrides that you’ve done.
Hopefully that helps to answer your questions, but let me know if I can help further. Thanks! 🙂
-Casey-