Well, Im sorry your family has other ideas,....BUT we (your YT family) will all be there with ya in spirit!!!! You have earned a great honor, one many ppl only wish they could earn, so I say GO FOR IT!!!! Its the day YOU have earned for YOURSELF! Make the most of it and enjoy it all! every second of it coz it will never come again and life is way too short!
Congratulations!!!!! Now go look for a cute dress to graduate in!!!!!!