I'm feeling a little lazy and do not want to dig through the fine print in my reservation to find the answer. I did a board search to no avail... We are booked at Pop Century for 4/18 to 4/23. I've already paid for it in full (room+tickets). We fell for the "Coronado is only going to cost X more.." mentality and would like to upgrade. Will Disney just let us pay the difference or will we get hit with change fees? We booked with the spring discount, but the website still shows rooms available under the spring discount at CSR.