Default Pre-upgrade questions

Hi guys and gals,
I am with 3 in UK, with a Note 2.
I am due for upgrade soon but there is a problem....
3 have stopped their unlimited data with tethering. So I won't be able to use my phone to tether the laptop and tablet at work for things like Netflix. (I use about 40GB a month).

So I am thinking that the note 3 would be a good choice as the screen is huge for viewing pleasure.
But is there a work around to hide the fact I am tethering? The unlimited data is available, just not with tethering.

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