Nicole & Jared had planned to be surrounded by their people seated in chairs during their ceremony but the rain had a different plan. Just like the beings they are, Nicole & Jared embraced the rain and the change of details. Their ceremony took place after the sun had set and surrounded by their closest embracing the rain alongside with them.
The silk you see being stretched and hung over Nicole & Jared during their ceremony is symbolic to the way that it can be stretched time and time again but yet is very hard to break. As strange as it may sound, silk produced by insects can be stronger than steel and the nature of the strength silk carries was symbolic to the bond and connection a couple is solidyfing on their wedding day.