I'd really like to be able to network/talk to managers, casting directors, etc so they know me and I really have a shot at the extension audition. Especially after getting cut for height in Chicago.
When people refer to networking, it's usually in the context for office or management roles. You cannot really network for the front line work (attractions, merchandise, performer). Disney is mandated by unions, so all of that stuff goes through specific casting procedures.
For most lines of businesses it's based on first come first serve, aka a big wait list. You may be more qualified than another person, but if they visited casting at 8am and you visited at 10am, and you both passed the interview, then the other person will get an offer for you.
For entertainment, everything is based on your audition score. Getting cut for height is unfortunately something that stinks about this line of business, but it's how the whole thing is set up. It's a numbers game; first you have to have the height, then you have to have the right animation score, then you have to have the right dance score, etc.
You can always request to talk with Entertainment Casting when you get here, but I guarantee they'll tell you to attend dance classes to improve your skill and then to just keep auditioning.
They'll make those height cuts for CPs since they are just hiring for temporary positions, but during my last FT audition they did let everyone at least try the first dance portion, so attend one of those towards the end of your program if you are able to secure your own housing.
I wish I had better news for you, but as someone who has been hit several times because of the "union rules" I understand how frustrating it can be to get the job you want because you do not have the time (or height), but everyone is affected by it!