I believe it is always better to send the proof as you have it available and it makes perfect sense that you don't want a judge to make up his mind against you and the time of the judgement is announced then you start to provide the proof. So why not to give the proof as it would make the case stronger. for example even the fraud marriages could have full wedding to show but may not be able to show all the other proof for example honeymoon or gifts or sending money to wife or going back to Pakistan to see her again etc. and once the visa officer believes that the person have not gone back once to see his or her spouse for the whole year either, then this case may be taken for interview (the interview date alone takes about a year or more to follow) as it does not provide any further documentation which would show the marriage is genuine.
I am neither a lawyer nor an immigration consultant. You dont have to consider my comments as legal or professional advice as they are not meant to be such. But its rather more of my opinion.
