My DD started preschool mid term, she's made a few friends but I haven't met any of the parents yet. Her birthday is in a month and I have to decide if we do something small at home or invite the whole class (33 kids, 15-20 pounds per child at a venue). She's been invited to two parties that will happen after hers. If we go we will obviously get to know the mums there but it does feel strange to invite strangers to a birthday party, equally it doesn't feel tight to attend everyone else's without arranging something ourselves?