My advice for anyone whose advisor told you no:
go to career services! Go to anyone else who might handle internships. My advisor told me my school doesn't give credit for paid internships, but then I talked to someone in career services, and they told me some people have gotten credit for doing the CP before. Don't settle for just one opinion.
vegetablegirl
Are you talking about online classes through your school? Taking four three hour courses would put you at 12 hours, which is full time. I imagine that would be difficult though, with the hours you'll be working at Disney. People work full time and go to school full time all the time, though, so I it would just depend on what kind of person you are and if you know you can handle that kind of workload.
See if there's another college in your state you could maybe transfer to for the semester that would give you credit. Be careful though, make sure you'll be able to transfer back to your original school and transfer your scholarship back.