A:AnswerDigital games work just like physical copies. Once downloaded to the system you don't need an internet connection. Unless you are using online features.
A:AnswerYea it is a physical copy of Minecraft, there is just no release date for the game as of right now. It is available on the eShop if you don't want to wait or are limited on space.
A:AnswerIt does have the ender dragon, mine craft dungeons is different than the original minecraft. But the game your son has he needs to find the ender portal and have sufficient ender eyes to open the portal and once he does he’ll be able to enter to fight the dragon
A:AnswerIf you log on to your Microsoft account, you will not be able to access other saves from other platforms, but you will still have access to all your purchases and save data on servers.