I am in the same boat as you were. Currently a PGY1 going through the Match process and looking for opportunities to open up. Do you know of any other PGY2s opening up? Any other spots at the program your going to?
As for the requirement thing, the program that accepted you certainly understands that you will not have all of the requirements. You might have to forgo some of your "vacation time" to complete the PGY1 rotations, but certainly you would only have 1-3 at most to complete if you are in a PGY1 surgical internship.
Congrats and looking forward to hearing from you.