A:AnswerI don't believe Netflix or Hulu are included - I had subscriptions before purchasing this TV. The remote has the Smart Hub key that allows you to go to Netflix, Hulu, YouTube and other apps if you have a WiFi connection.
A:AnswerYes it can be mounted. Any mount for the size of t.v. would work, there are many different mounts. Choose one that fits your needs, whether you want it stationary or to be able to pull it away from the wall, tilt sided to side or up and down. It's good to attach the mount to a stud in the wall for extra support.
A:AnswerYes, you can see the captions from a reasonable distance. This TV has options on how you want to view your captions as well, which is huge for me.
A:AnswerDoes work with You Tube......don't know about Disney. Although, I don't believe the TV itself determines if these channels can be accessed. It's up to what you are wiling to pay for.