Thanks for the tips!
I have been watching EF like a fiend (despite the alterts functionality), but it is J2 so I'm not expecting C to open up prior to the flight. I guess my best bet is to get to the check-in desk at T-3 and ask for the AA employee since checking in at T-24 seems not to be possible

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The last time I had a late clearing eVIP it was J0 but someone no showed. The GA decided to clear me at T-45 minutes and C inventory never opened. Any ideas how a scenario like this might play out at PVG? I guess I can hang at the check in desk instead of the lounge....