A friend told me that one of the reasons he likes Grand Forks is its lack of clear breakup of social classes. Everyone is able to see the same theater show as well as go to the best restaurant in town and be able to afford it. Tickets to an outside concert at the North Dakota Museum of Art are only $10 and a four course gourmet dinner there costs just shy of 50 bucks.
Almost every other Tuesday night NDMOA offers outside concerts with free beer or wine (donations are welcome!). You can also treat yourself to a grass fed beef burger or a root beer float. Be sure to bring a blanket or a camp chair! (More information here)