Re: NIKKAH QUESTION
my cousin had her nikkah on the wedding day in the banquet hall on the stange in front of everyone. The haq mehr etc was not announced. The Imam was extremely nice and asked the fathers if their children consented to the marriage and then asked the bride and groom if they take each other to which they said yes. Then the Imam gave a speech, which he ended on an awesome joke.
The paperwork was filled out and signed while everybody was eating.
There's no need for the bride and groom to be in separate rooms.