How can we cover a chain link fence for a wedding?

Wedding theme?

You could decorate with ivy, real is fairly easy to come by naturally around here.

Decorate material with silk flowers and attach like in this photo. If not flowers then some matching decor.

String twinkle fairy lights.

Suzy...I would cover a focal point but add flower/bows up and down the fence which will look great. Of course, use the flowers bride wants along with her colors.

I would cover where you will have the main group or main part of the wedding. I would put a tall potted evergreen tree or something at each end of the covered part to draw the eye back away from the fence.

Wrap in white sheets or paper.then....Ribbons of little led lights?

A lot depends on the view beyond the chain-link fence. If it's okay, like a wooded area or a neighbor's attractive yard, you could do what Desert Rose suggested. If it's an unattractive view, try to shield as much as you can. There are nurseries that will rent potted plants, trees, etc., if you need a bunch.