Op -- Thank you both for these great recommendations! It'll be hard to choose between them.

The outdoor seating at L'Auberge Chez Francois is nice for lunch: https://www.laubergechezfrancois.com/brasserie-menu/

Bollywood Bistro! Wonderful! Someone might suggest the Old Brogue - good coffee (Katie's a part of the Brogue). Gross food.

Hi, all -- Marylander here -- I'm crossing the river tomorrow to do a garden tour in Great Falls. I'd appreciate your recommendations for lunch and/or coffee breaks. Thanks!