You're amazing doing this with your hubby!!
Out of interest, I'm not doubting either of you one bit cos you're defo serious, but how would the drs know if you did go astray and eat a cheeky bit of butter or something? Would it stop the op going ahead? I know the pre op diet is for one's own good, so it would be silly to, but is there a way of knowing if someone were to sneak something extra in?
Good luck with it all and I wish your partner every success with his op!