Formal Check out this link for more information: https://www.brides.com/story/wedding-dress-code-explained#toc-formal-or-black-tie-optional
The St. Olaf ceremony is within walking distance from the Hyatt Centric and Hotel Indigo (about a block). If you are driving to the ceremony there is street and lot parking around the church. The reception at Minneapolis Event Centers is about a 5 minute drive from the church. If you are not planning to drive, I'd recommend taking an Uber or Lyft (you can schedule in advance if you're concerned about availability).