ANOTHER GAME TO PLAY WITH THE HERD- Ball Toss. Would also make a great "rainy day" activity. You could even find tubs or buckets of varying sizes (like nesting bins) for more of a challenge for the older kids (Think Skee-ball).
Bachelor and bachelorette party together. Guys and girls do their own thing in the morning meet up in a field play some competition games filled with dares for the bride and groom. Completed with a Bon fire and maybe camping.