My advice would be relax, have fun and just enjoy. If I remember correctly, my train of thought was:
"Wow...I am finally becoming a DG! "Wow...I am finally becoming a DG! "Wow...I am finally becoming a DG! "Wow...I am finally becoming a DG! "Wow...I am finally becoming a DG!"
I imagine that yours will be something similar, only with Alpha Phi of course!!
So happy and thrilled for you!