We plan to give ds a 4th birthday party in October (it will be the first proper party he will have had), but most of his friends from nursery have gone on to school. We're not particularly friends with his old friends' parents, so he is unlikely to be seeing them again, and he'll be a year behind them if they end up at the same school.
Should we invite them, or should we concentrate on the new intake, even though he doesn't know them as well?