You can always make changes to your events. The 7 day activation is just how long the watermark is removed for, photos taken in THOSE 7 days.
NOTE: Every time you make a change to your event you must re-download it in your Pixbooth 2 app. Changes will not be applied if the event is not re-downloaded.
- This is done by selecting the cloud button next to the event code > located on your dashboard page in the app.