Resident registration

Little confused here. Ive arrived in Japan yesterday on a working holiday visa. Ive got my resident card at the airport on arrival, but it says i need to register an address within 14 days of deciding where to settle.
My plan for October and November is to travel around and see friends, so i will not be in one place for more than a week.
Do I need to get an address – any address registered within 14 days? There is mention of penalties for not doing it, but its not the clearest translation on the website.
Am I worrying too much about the importance of this?

by CuteOldMan