Welcome to our State. Wow...sux to get a speeding ticket while on your honeymoon. We usually have a pay the fine or contest it in court option. Obviously, its not feasible to fly back here to contest the ticket in court.....so just pay the fine. Will it showup on your driving record in IL? Not sure. You might want to ask anonymously from your local county office there.
Enjoy the rest of your stay....and slow down.