With all these bits of advice floating about the interweb about how we should regularly stretch and move about during longhaul flights, i wondered if there was any official/unofficial rules about walking around the aircraft?

You always get the occasional nosey bger who just has to walk from the back through the other cabins thinking they are steathily going un-noticed, but I wondered with the way for example the unique 52J setup is, if people walk back the other way through the aircraft to stretch out? What if you're in F and you want to stretch you legs? It means you have to go through the Y+ cabin, then J and fumble through 3 sets of curtains.

The last few flights Ive been on the UD and the furthest i dared walk was down to the galley, i felt i was intruding on everyone else if i walked any further...

There is the obvious answer of course, and thats to just drink more champagne, scoff more food and then go to sleep on the nice flat bed...