DD has been invited to two parties - both at the same time - we accepted the first, but now she really wants to go t the other one, she's 4 - would it be awful to decline the one we have already said yes to? Both are local and taking place in halls, so large affairs. The one we said yes to first is a younger child we are friends with, the one she wants to go to is a child she is 'best friends' with at preschool..