Of getting into the JFK lounge before my flight (VS026 leaving at 7:40AM), or getting an upgrade to Upper Class? I realize I bought the cheapest ticket, and don't mind flying PE (it would be my first time). Just curious if there's any chance - especially since I'm flying alone (and so have more flexibility).
Access to the CH is very unlikely, but ask at check in and they might allow access for a fee.
As for UC, do you mean by paying /using miles or as an op-up? If the former, if there is availability and you are happy to pay the fee then sure, if the latter, then unless you are a Au card holder and most importantly they NEED to move people due to over booking then very very unlikely.