[dj_axl]

> diskless laptop with a USB live distro with no RW filesystem

Which distro? One known problem is that browsers still transmit their location. If the network and the laptop are hundreds of yards distant, that's an instant red flag. Once that problem is corrected, there may be unknown problems to deal with.

[chakalakasp]

TAILS. And unless you are using GPS, which would be a silly thing to do on a device you were using to achieve maximum anonymity, your laptop has no idea precisely where you are.