I am new to Illustrator but made a very cool file with photos & text to print as 11x14 poster. A JPEG file is needed to bring to the printer (using Costco which usually works fine). But when I get to the printing kiosk & open the file, it's appearance looks posterized with crazy neon colors. It's not even close to the colors of the original file. The color is set at CMYK & I'm choosing highest quality (10) in the save options. The .jpeg file looks fine when opened on my iPhone or another computer. Any idea what I'm doing wrong?
Basicly they are using an aplication that does not read right a cmyk file (or you did not embed it).
The visualization is not a problem, the problem could be that that program does not recognize embeded profiles.
Anyway, make a sample print and make decisions based on that.
Or use an RGB file, but still, you need to make a test. If the project is important, print a small file to see the colors (I would not trust a kiosk monitor at all), and make adjustments on you computer.