We ate at Amazing Grace on a Saturday morning in June-- lovely and sunny, and ended up waiting quite awhile for an outside table. We were okay with that, and the staff made the wait pretty enjoyable-- we were served coffee, we got a muffin from the bakery to tide us over, and servers kept us updated on when a table might open.
The breakfast food was great-- offbeat options with a healthy twist, vegetarian and meat. Loved the patio. We'd definitely go back when we visit Duluth!