My fiancé is set for her interview at the beginning of December (rapidly approaching!!!!!) at the US Embassy in London. In her packet it says to provide "Evidence of your relationship and intent to marry". Our plans are to sign our marriage license almost immediately upon arriving into the US as we want to file for AoS ASAP. We are having a wedding celebration in the summer, but we will already be married by then. Is a letter enough saying we're willing and intend to marry enough (as we sent in for the petition) to show this as we don't have any formal evidence (ex- venue hire, caterer, etc.)? And should we explain that we're planning on obtaining a marriage license and then having a celebration or should we plainly state that we intend and are able to marry within 90 days? Thanks in advance for your perspectives and advice!! :))