Maybe try to transfer to another area? Instead of working as a ride operator, or support, try and get a job in another department or doing something else. That might make a world of difference.
I used to love the Air Force but it got to a point where I literally woke up dreading every single day I had to go on base. I left and started school and am now working at Starbucks and I'm a lot happier. I have thought about going back and trying to work as a civilian on base to see if I like it better, but I figure why rock the boat with what I have going now. If I am still at Starbucks after I'm done with school I might try and become a shift lead and then maybe transfer to work at corporate to do something with my graphic design degree.
The point is, like others have said, not every job is ideal or enjoyable all the time. You are going to be tired and there are situations where you will not be doing what you want to do right off the bat. It takes time and a lot of work to move forward, but it's worth it in the end if that's what you want. If you want to advance with Disney I would encourage you to stick it out and try and see if there is something else in the parks you can do before deciding to leave altogether.