Chicago has an indoor mask mandate. Masks must be worn in the Grand Foyer and halls of the South Shore Cultural Center. These areas are public spaces.
Yes, the venue has many pay-to-park spots. The rate is $1/hr for one hour $6 for up to 4 hrs $12 for up to 9 hours $20 for 10 hours to close
There will be shuttles AFTER the wedding back to the Hyatt Place Hotel (downtown Hyde Park) and The Best Western in Hyde Park.