I use 70-200 in weddings for head shots as well as to get DOF but I can tell you majority of the time, I am using 24-35 range on FF. Or 50, since I don't have a 24-70 yet.
But generally in Singapore, for weddings, the ball room are usually not that big and lighting not always ideal. So from my experience, you might find 24-70 range, external flash, and fast lens more useful and practical.
But generally in Singapore, for weddings, the ball room are usually not that big and lighting not always ideal. So from my experience, you might find 24-70 range, external flash, and fast lens more useful and practical.