My son just left for bootcamp July 16, 2012. We, too, received a quick call saying he made it safely. He sounded really good...definatley NOT as nervous as when he left..but I am very anxious to hear from him again. You mentioned you got his graduation information. What types of info came with that? I am hoping you hear from your son soon, too.... I know how eager I am to hear from my son.
I don't think that is typically the norm, and I didn't get one either. My son called me from the OKC airport before departure, and I was expecting the quick call when he got to GL, but never got it. I feel robbed!! LOL!! I don't know why he wouldn't have called but I'm just going to assume that all is well. My son left August 2nd. Have you heard anything from your son yet?
Numbering the letters (if you haven't already) will help your son know which letter to open 1st, 2nd, and so on. Don't stress if you can't remember which is which. He'll figure it out.