can insurance here is VERY different, the insurance is on the vehicle age and value not on the driver, and generally any one can drive as long as they have a licence
The first thing you need to do is ensure a TM30 has been made to register your new address. Maybe your landlord has done this, otherwise it's your responsibility. I would phone or email the immigration you would be using & check their rules, so many office's requirements differ
if on holiday and you only need a sim to call a taxi or check a route low speed and cheap is ok, as majority of planning i do evening before using hotel wifi, each situation is different so great to have a choice