Sweet cones!

I would do them a week before, as long as all in date and tubs are not opened they will be fine x

I use to work in a sweetshop and we brought tubs of sweets that when unopened in the boxes kept fine. However when we took them out and put them into cones and bags, we didn't do it too soon because they either stick together into a large lump or go stale. I wouldn't do it any sooner than a week before the wedding. Make sure when you put them in the cones that you tighten it up really well so no air can get in. When we did wedding favours we did them a couple of days before - possibly to avoid any problems. Hope this helps! X