I would just like to pop in and say almost all of my current & previous managers started from the ground floor. My former general manager started off making peanut brittle on Main Street. My current general manger started off selling ice cream in
Disneyland. I actually can't recall a manager than I've worked with that didn't start off lower in the company (although there was probably a few).
The Executive Vice President of WDW has worked in housekeeping, F&B, etc... I don't believe he even has a college degree, but obviously managed to work his way up.
Many management job postings will have a required qualification of 2 years WDW experience. I have spoken to college students (who do not work here) that say they want to be a hotel manager and that's what they're studying in college. I ask them if they've ever worked at hotel, and they say no. How can you want to be a hotel manager and never have worked in a hotel? You might hate it. That's why Disney wants you to have Disney experience for higher level jobs, so at least you've worked in or with the department and have some understanding of it. That way you don't get shell-shocked and transfer or quit after they've spent the time & money to interview, hire, & train you.
Me, personally, started off as a front line Cast Member working Front Desk. It was what they were hiring for at the time, and something that I had never tried before. I had worked with food & beverage and merchandise in previous jobs. I never want to work in F&B again

but enjoyed merchandise, but wanted to try something new. I stuck with Front Desk for over 2 years. It was okay at first, but I really grew to hate it. I transfered to be a Maintenance Coordinator which was a promotion for me. It was my first time putting in for a transfer, and was hired the same day as the interview. Honestly, I think I would have taken any job to get out of there - luckily it ended up being a department I really enjoyed working with. I worked there for a year, but the department was moving to another park and I would have been left behind doing icky data entry. I scrambled to put in for a transfer to any job that I was qualified to do. I put if for over 30 positions, only got 2 interviews. Finally, I saw a position for an opening team as a engineering coordinator. I new it would be perfect - I put in for it and got an interview. I was hired 3 days later, another promotion for me. Now I am considering attending an information session for Park Operations Management and have applied for a 6 month internship with Animal Programs (I am currently pursuing a degree in Biology). All the irony in this? I originally wanted to be an animator and started school at the Ringling School of Art & Design which costs more than Harvard. I got to thinking, and I didn't want to spend that much money for a department that hires 1 in every 2000 applicants. It was a good decision too, because I would have graduated in 2004 - the same year the animation department closed.
You never really know where you're going to end up working at Disney because there are so many jobs. You may end liking something that you've never considered. Every week when I check the job postings, I alway run across a position I didn't even know Disney had working here.