Love the soft colour combination and it will be great idea as a centre piece for head table. Other tables without flowers. Can buy this type of vase from Brighten at the flower market. Rustic vase: drill out center of branches & fill with flowers!
Recycle old water bottles and grab some cheap pool rings. You could color the water like the rings too make a more challenging match/ring toss games for the older kids. Add glow sticks for night time ring toss