Have a wonderful time! It is a little cooler here in California than it is most years at this time.
I understand your excitement. My son and daughter in law live in Southern California. Her parents live in Japan, too, and will be coming to California to see their (also mine) new grandchild. All of us are so excited but we have to wait awhile as the baby is not due until October 11. (It's a boy! :P )