DS has been invited to a joint birthday party for two sets of siblings. The invite has come from one set who we know well and I will be buying them both presents. We do know the other two, but not very well. Would it be bad form not to buy them presents? Last year the elder of each pair had a joint party and I did buy them both a present, but now the younger siblibgs have been added to the equation, it seems a bit much to buy four presents.
Am I just being a miserable stinge?