K.J.
My 3 year old loved coming to see his new brother! Had him bring a gift for the baby and what do you know.....the baby had a gift for him too because he was his new big brother! And after awhile he was ok with leaving. But I think it's important to include the siblings. It's their immediate family. The 22 month old? Well he/she will have a shorter attention span but you shouldn't take one and leave the other unless they are sick. Good luck and congratulations!