session c add/drop

<p>hi, I am not sure if I need to drop a class now. I know that today is the last day to drop and receive a refund. I am still on the waiting list for a class and the last day to add is 7/2. Will I be able to drop and not charge a fee if I cannot add in the course eventually? or should I drop now? Given I am not in the class yet?</p>