I have a feeling I already know the answer to this but figured I would ask the experts (FYI - Silver Elite on Coach Ticket)

I had a flight scheduled for EWR-JAX for early September but unfortunately had to change my flight due to family issues. So $150 per ticket out of pocket (The flight price was not much more).

Now I have learned that there is a possibility I will need to change the flight again - Does CO provide any break or will I just be charged a $150 change fee again? Also - If I am on an early Saturday morning flight and OLCI 24 hours before is there any chance I will be offered a flight on Friday?