Yes. Sometimes you find yourself In the Woodchipper, and it's a good thing to know the geography so you can find your way out, instead of down the chute and into the blades.Agreed on the "familiarize yourself ..." part. Not so much on the first sentence. Sparring should be done at all ranges where it is possible to make contact with an opponent, including toe-to-toe, chest-to-chest. If someone's sparring doesn't include that, it's a flaw in their approach to sparring, not with the idea of sparring itself.
It is ALWAYS better to get your butt kicked by your friends and/or training partners, or even the guys/gals yu can't stand to be around at a tournament... than have it happen to you where you don't know anyone, are alone, and find out too late there may not be rules. At least if you've trained all of these things, if they happen to you from one with malevolent intent, you've done some of the required homework.