My Half marathon Event is 3 days earlier than what Garmin lets me re-schedule it. Am I screwed here?

Thanks for nothing Garmin Forum!

Well I got my answer. Documenting here for posterity.... 

For anybody curious..... things worked out for me....however it was buggy, and confusing.

1. The following day after my final training activity completed..... (still 2 days before my half-marathon), I tried to reschedule my Half marathon using the app, and it permitted me to select 3 days earlier (FINALLY!), and when I clicked "save schedule", i received "an error occurred, this isn't you, its us!" message.    The half marathon still appeared on the wrong day in the calendar. I repeated this 3 more times before giving up.  The outcome wasn't changed.

2.  On the day of the race, 2 days later, I noticed my half was appearing on the desired day, BUT ALSO on the incorrect day, showing I have a duplicate Half marathon event.  Interesting! This is a very buggy experience.

3. On the day of the race I used my watch, and started a new Running event. My watch said "today is your half marathon- good luck etc", and it permitted me to start my half marathon successfully.

The fact that this experience was very buggy, and almost seemed like I used a loophole in the software to re-schedule my event.  Very odd.... and I can't say it will work the same way next time.  Wonderful! 

Good luck to you all