As it’s your first time in J are you wanting to stay awake, drink and be sociable at the bar or you planning on sleeping?

As it it an MAN flight it could be pretty noisy but less likely with that departure time.

The front is quieter and less foot traffic the rear is louder and more foot traffic as it’s your first time though you won’t really know any different.

I prefer the front - whether I’m connecting or about to queue at immigration I don’t want to be at the back of an additional 500 pax.