Don't know about Georgia, but Disney is in Florida and I do know about Florida. It is illegal in Florida to tow a trailer behind a 5th wheel.
Can't predict if you will get caught or not, but the Florida Highway Patrol will not ignore you.
Playing ignorant is not a good idea as it is well established that ignorance to the law is no excuse.
You can be stopped in Florida, fined, and have to un-hook the trailer. You will not be allowed to travel any further. So if you have money to burn, and don't mind leaving your trailer on the side of the road while you make other arrangements, go for it.