So there are two questions … firstly about the marriage the grl should buy a lehnga cuz u don’t want all the desi aunties talkin on your wedding day about how the bride should dress and wat not … secondly you should learn how to say i do in urdu as in qabool hai cuz being pakis we always get a desi maulvi and u really can’t get married with out it and then throw a tantrum on ur wedding day about mehr or my side of relatives or something like that …
As for the second question the first thing u should do is start a thread which you have done so good job 
… secondly once you meet them pick out probs with what they said and take it in the wrongest possible way and start another MIL and/or SIL thread where everyone will come and tell u to grow up and not take things in the wrongest possible way and after that i think things should be ok