you cant give false info
tethering is risky and with apple knowing that jailbreak is now legal they will be advising all cell providers to watch for these activitys
and high data usage all of a sudden is very risky indeed
to say that they wont do anything is understatement
dont be the first one to get caught because i think they will make an example out of anyone who does get caught
i know of knowone so far who has been caught but thats not to say that they will never catch them
use it at your own risk