Day trip suggestions for a few hours to waste

I'm heading to Grand Rapids this month for the first time. I'm going to the morning screening of The Odyssey in 70mm IMAX and then attending a concert at the Pyramid Scheme in the evening and driving home that night.

I'll have a few hours in between those two things.

A few questions:

-Where should I park after the movie so that I'm close enough to the venue while also being able to travel around on foot for a few hours before the concert? I'm going to need to park for a several hours, so I'm assuming street parking won't work for me. I am willing to park a couple times if there's something worth seeing that I can't reach on foot from the Pyramid Scheme area.

-What would you recommend for a relatively cheap meal before the concert in the Pyramid Scheme area?

-Best places to get a coffee in the area.

-I'm bringing my camera. What are some good places in Grand Rapids for photography?

-Other than Value Village, which places sell used Blu-rays?

-Any other suggestions you have for things to do or see. Due to the time I have, museums won't work for this trip.