I do a lot of quilting related stuff at my local office store, Staples in my case. Check first but many stores have self-service areas. With a PDF on a zip drive, or by internet access I can print in color, or do an old school enlargement on the copiers.
At my store, the employees will help "self serve" people if they can. You should understand the basics of file transfer or how to get to a site on the internet, and have whatever connections you may need -- usually something with a USB type drive.