as best i can tell i can apply for the i card at the same time i apply for 13a,
we will have to wait about 1 month maybe up to 2 months for marraige certificate, but will be given a copy soon as we are married, but it wont be official as it has to go through nso i think, usualy 6 months without fast track,
so we are hoping the copy we get at our wedding will suffice for purpose of applying for 13a, instead of having to wait first for marraige doccuments from nso