VS,
Old Time arcade cabs used screen printed marquees that were/are backlit.
The translite material that's being used today mimics the screen printed glass marquees, but is much less expensive.
The material holds up extremely well.
And with today's printers and ink technology, the Dye ink also holds up extremely well.
So, short answer on the marquee:
If you are backlighting it -
Go with translite material with either Gloss or Lustre laminate on top.
I think the Lustre looks closer to "Original", but almost everyone orders the gloss - it just looks much better.
If you are backlighting it and don't get the artwork printed on translite material, you won't be happy with it.
It will not backlite well at all.
As for your CPO, you don't want to go with a local printer unless they've got the material and experience doing arcade prints.
Again, CPOs can be screen printed, but can be cost prohibitive.
To have it printed correctly, it should be printed on an Adhesive-Vinyl with a very durable laminate that has UV protection.
No laminate is required if the CPO art will be under plexi, but if not, you need the right kind of laminate to protect the artwork.
If your CPO artwork will be under glass a gloss laminate is still suggested as it helps bring out the colors.
If you have any other questions, I'd be glad to answer them.
My email is john@basementarcadegrafx.com, phone 517-851-4286
Yes, I run an arcade printing & design business but am happy to help whether people use my service or another.
By the way, GameOnGrafx & Emdkay do excellent work.
John