Ds (14) has been invited to a female friends house party tonight. He is adamant he doesn't need to take a card or a gift and I am massively unreasonable for insisting he walks down to the local shop to get a card and then stick a fiver in it.
I think it's rude to turn up with nothing, he thinks I am wrong and is now being stroppy and saying he won't go. AIBU or should I just let him go as he wants with nothing?