Hi Lauren.....We just spent two weeks at Bandon By The Sea RV Park this summer in July. It's a nice small town. Here are some things that we did and other suggestions:
Face Rock Creamery, Bandon Fish House for great fish and chips, beach viewing and walking (Bandon has a very pretty shoreline with lots of big rocks in the ocean and nice viewpoints), Bandon boardwalk, Farmers Market at end of boardwalk, Horseback riding on the beach, Coquille River Lighthouse, Sunset Bay SP, Shore Acres SP, Cape Arago SP, Charleston (if you like to buy seafood for home consumption check out Chuck's Seafood), Coos Bay, Cape Blanco SP (visit lighthouse and Hughes House), Port Orford Heads SP, take a nice drive on 42S to Coquille and back.
Not all in Bandon, but Coos Bay to the north and Port Orford to the south is the farthest we went from Bandon, about 25 miles each way.
We enjoyed our time there immensely. But that's just us. Your results may differ.