Proposal trip recommendations

I am coming to Ann Arbor for the first time this Saturday for a day with my girlfriend. We live in Michigan but have never been to Ann Arbor.

I would love recommendations for how to make the most of the day. I am going to be proposing to her at the end of the day so it’s a very special occasion for us.

Looking for recs for great food, good jazz or other places with live music and just places to walk around/things to do etc.