A:AnswerAn "all region" disc will play on all DVD players, but the discs you describe as not playing on US (Region 1) players are not, by definition, "all region" discs, so they won't play in the UBP-X700. In other words, the term "all region" refers to a type of disc, and not a type of player.
A:AnswerIt doesn’t need Internet to play DVDs but required if you intend to stream using the built in apps. It will acquire wifi from just about any Internet provider.