These are some of the motels close to the church. The church is about 1/2 mile south of I-70 on exit 225 (Cave Springs/Truman Blvd). So all of these are very easily accessible from the church.
Red Roof Inn
This one is one exit to the east of the church.
Holiday Inn Select
This one is the same exit as the church, but about a mile to the west on the service road.
This is the same exit as the church, across the highway.
This one is one exit to the east of the church, and then about a mile east on the service road.
This one is across the highway and down one exit to the east of the church.
Same exit as church, across the highway.
If you choose to stay in IL on Saturday after the BBQ, here is a link to some accommodations in Alton, IL which is not far from Robin's house.
You are also welcome to camp at Robin's or bed down on her floor if you would like to save money.