My fiance came as k-1 and we got married within the 90 days but didn't file for AOS untile a few days before his I-94 expired? What will happen? will they still accept the application or what will we have to do next?
I think you will be fine. As I recall, the law only requires you to get married within 90 days. But confirm this information and do check with a lawyer as to whether you may travel or not while AOS is pending. This could be the only issue I can think of.