I took my sons to a friend's 10th birthday party at someone's house recently. As the host's family is a big one, there were lots of older teenagers (aged 14 - 17) around and in the early evening, adults turned up to watch the fireworks. So it was a mix of children and adults.
I know the family (arty and alternative)are laid back about their teenagers drinking lager at parties. As my nearly 13 year old son is an inbetween age, I told him he could have one bottle of lager but only when I arrived in the evening. He stuck to this so I was told by everyone. I still felt uneasy as I would never let him drink that amount at home. I saw the 10 and 11 year olds pinching bottles of lager and sharing them round, though the hosts did try and stop them - though did not stamp it out and get really cross IYSWIM.
I know another family (church going and quite strict with their sons) who also routinely let their 11 and 13 year old sons each drink a bottle of bacardi breezer with meals and at parties.
I still feel this is too much, too young. Am I out of touch?