Truth is always stranger than fiction and imagination looks brighter than reality.
Reality shows are not real as they look. Everything there is dramatised in front of people and a large number of viewers get fooled.The contestant whom the channel marketing people think should be the winner, gets the crown.
As far as wedding for Sara and Ali goes, Its just a money game.. They have already being married earlier.. and as per Islam law, they cannot marry again. So, probably they are dong for money and trp's. . .