Add an {{event_comment}} template key in Upcoming Event Reminder notification

I am trying to set up our reminder notifications for when folks register for events. In our reminder notification that goes out one week and one day before when people register for an opportunity, there is a template key called {{need_comment}} that we include, and sometimes our Advanced Program Managers will add comments in an opportunity that are specific to that opportunity that they want in the reminder message, such as "Don't forget to bring your gloves and shovels."

There is a similar Comments section when I am setting up an event, but there doesn't seem to be a template key for including those comments in the Upcoming Event Reminder notification that goes out one week and one day before an event. I would love to be able to send, for example, the virtual link for the event in the reminder email specific to that event, which is something a comment and an accompanying template key would be able to cover.