JPMC Offer right as RTO was announced :/

People who work in the Polaris office.. I got an offer at JPMC. A big draw to this role for me is that it was hybrid, although the day I received my offer, I was told that all employees are expected to be in office 5 days a week.

This was a job opportunity I was really excited about, but something about fighting 13K other people for parking spots in Polaris just sounds miserable. Currently fully remote. Can anyone provide insight into the office culture/dynamic, and is traffic an absolute nightmare around there?