From my experience, you still get EUA'd whether or not you have checked in.

I got the chance to check in 5 hours before my flight from EWR-IAH, and got my Coach BP. I went and got some lunch then off to the P-Club.

Forgot to check my upgrade and got on board with someone already in my seat! Turns out later that I was EUA'd at the 3 hour mark. I even got an email on my computer!



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SFnFlaGuy