Think your out of luck getting the side film done.
Kodak subcontracted color side processing work to Dwayne's Photo, an independent facility in Kansas, which was the world's last Kodachrome processing facility.
Dwayne's Photo announced in late 2010 that it would process all Kodachrome rolls received at the lab by 30 December 2010, after which further processing would cease. The end of professional processing meant the end of the Kodachrome era. As Dwayne's final processing deadline approached, thousands of stored-up rolls of film were sent in for processing Once film received by the deadline had been developed, the world's last K-14 processing machine was taken out of service The final roll to be processed was exposed by Dwayne Steinle, owner of Dwayne's Photo.
Kodachrome - Wikipedia, the free encyclopedia
OMG, I can't believe you went to Wal-Mart with your film. My experience with my Wal-mart, it would be the last place on earth I get anything done at. I'd rather burn my roll of film!