Yes
Yes
Yes
No. If you have a WiFi enabled device you may detect a signal at various locations in the park, but this is Disney's internal WiFi and is not accessible to the public. If you want WiFi in the park you will need to bring your own hotspot that accesses a cellular network.
To download the vids, yes. To watch them once downloaded, no.
Unless you have downloaded them, you need the internet.
Yes you do need wifi
Yes, you need wifi to FaceTime.
You need Wifi to do anything on YouTube.
Yes you need WiFi
You only need WiFi if you are downloading new books. Books already downloaded do not need wifi
Some of the hotels offer free wifi in public areas such as the lobby and pool. Inside the parks, there is no wifi connectivity for guests.
having them in the ipod is the only way to watch movies without wifi