That's cool. I've just finished my year 13 exams today which is like the equivelant of the final year of US high school. We won't have any big graduation ceremony, it'll probably just be a case of getting our results in august and being sent our exam certificates lol.
I am very glad, that you went through and lived the graduation ceremony with your family and mates...Enjoy the moment.
A brief story I want to tell you:
Long time ago, I was studying and working at the same time (I am proud), then I graduated - received the diploma - certificate and back to work, no ceremony at all. This happen to me, in High School and then at the Technological Institute.