If you see a big difference between your children?
My daughter was 1 when she went to nursery full time - when i went back to work. She is now 3 and is waiting to go into school in September. I have since had a son (8 months) and i am going back to work in September. Because neither me nor my husband can commit daily to the morning school run, we have decided to hire a nanny to help with sharing the school runs/pick ups. Nanny will also look after my son by day.
I am now feeling nervous that my son will not get the same opportunity as my daughter to mix with lots of children - we have lots of baby clubs near us and our nanny knows other nanny's round us who she will meet up with. She will also take him swimming once a week. I fear this is not enough - my daughter has lots of friends and we have made lots of parent-friends as a result of this.
Can i ask if any of you have had a similar experience with your children and how (if different) they have turned out? We might send him into nursery for a day - but my nanny (who happens to still work in a nursery now) says that the children who just go once a week are generally distressed as they hardly know anyone there - because they only go once a week. Am i just over-things/being silly? 
Thanks!