Not really an answer to your question but do you have a 3g phone? On holiday recently we stayed at a place with no wifi and I just set my phone (HTC Desire) up as a wifi hotspot. That way I could connect both my Tablet S and my wife's laptop to it through the normal wifi on both. Given a half-decent phone signal it was pretty quick too. Just a thought and it saves buying a separate 3g dongle.