Heading to HS after Princess 5K and then back to EP?

So we are running the Princess 5K on Friday and have an 8:35 at GG. I’m think that we will head to HS immediately after the race (7 am-ish?), tap in, and then go back to GG, and try to get a BG while we are dining.
Willing to “risk it” because we have a full HS day the following day.

We will have a car at EP after the race. Should we drive to HS and then drive back to EP? Or will it be easy to get a ride share from EP parking lot at that time?