I feel your frustration. If you purchased your ticket before 11/16/21, Celebrity would provide free of charge a test for you to enter back in the US. If after, they will also offer at an approx. charge of $99. I would say hope for the best, and if you do test positive, you could still drive. You would have to quarantine somewhere, as flying with covid wouldn't be good.
Can you change your flight to later in the day?