Just looking at it from a different perspective, and bearing in mind I havent had a 2 year old at a birth, my initial thoughts when reading your thread was that "wouldnt a 2 year old be distracting"? I suppose I am thinking along the lines of kids that age unable to sit still, keep quiet etc for long periods of time and I am wondering whether you when trying to concentrate on the birth that you want would become concerned/distracted by Lucas's wants and needs. Especially since you are not giving birth in your own home where Lucas will be free to wander.

I am not saying that you shouldnt have him there, in fact it would be a lovely bonding experience for you all, I am just suggesting look at it from a practical perspective.

Incidentally at age 13 I witnessed my sister's birth and was very overwhelmed by it all.