Originally Posted by
StuckinITH
You really don't have a way to know until the last GS and 1K have checked in, and also there might be some Platinum with a higher fare.
The best that you can do is to count the number of occupied E+ seats. As a Platinum, on DCA-EWR on a workday evening, I’d assume you’re behind 50-75% of the passengers who are listed in E+. Despite the fact that F is only booked 1/6, the fact that E+ is almost full tells me your chances aren’t great.