The headset will initially use a WiFi connection, but you will have something to try at the big beyond the usual tech demos. AT&T is planning a Game of Thrones experience ( Dead Must Die ) that has you donating Magic Leap One to take on a White Walker. It's a shameless promotion for AT & T's WarnerMedia, but it could give you a feel for what's possible.
Whether or not you should buy one is a difficult question. Magic Leap has significantly expanded the One's app catalog with everything from NBA basketball to Star Wars but this is still a device for developers and well-heeled early adopters. It's not meant as a mainstream headset, and you may want to keep off unless you're completely sold on the concept.