Best way to approach it. Keep in mind this is a gen 1 consumer headset, so just don't expect the Matrix, or anywhere closeYup mine shipped too, trying to keep hype levels low so I don't get disappointed.
Saying that, I've been playing VR stuff for the past 4 years now, and even with all the current limitations, I'm in no way bored of it yet 
Also, post your thoughts after you've tried it. I never get bored of reading that sort of thing!
If I can make a suggestion though - one of the best things you can do with VR is show it to other people. Even if you stick to the First Contact and Dreamdeck demos (they're auto-installed with the Oculus Home software), show those to your family, and they won't soon forget it!