Originally Posted by RealHJ

Depends on the fare rules. Did you save it (load it from the one screen that has that link before you book)? If not, there is no way to ever bring the fare rules up for your fare away, so you'll have to trust what DL tells you.

Only way to know for sure is to consult the fare rules for the fare that you booked. If you didn't save it, well, ask DL and hope that they tell you the truth.