Quite fancy this but I am sloooooooooowwwwwww 
A lot of the "skill" is group riding in the dark whilst tired/knackered, sitting on someones wheel saves a massive amount of energy but it must be safe for the whole group and there are tactics of road positioning in the dark to light up the road for the whole group. Everyone goes through a grumpy phase on a long ride, don't take it personally!
MEMWNS rides can give a bit of practise at the night riding skills, sit back and watch the experts, everyone has their own preferences/style, see what suits you. Try to avoid sitting with your front light blinding a rider in front that has a mirror to keep a friendly eye on you to avoid splitting the group.
I've ridden in the dark a lot and I'm quite happy riding through the night having done this a few times. That said, I usually ride solo and the only all nighter I've ever done in a group was Hereward The Wake. It went okay with no issues so that was good but I am definitely no expert at riding in groups (day or night). I don't care if people get grumpy, I'll happily just shut up and ride.
I don't mind doing my time at the front but I always worry that I'll be riding slower than people want, I also don't know when I should get on the front so I'd rather people just tell me when they want a rest. Like I say, I've always ridden alone, so no experience here.
