There's a dentist in the neighborhood that gives out Capri Sun juices. And a Pepsi delivery guy that gives out cans of soda. DD usually takes them out of the bag right away as it gets too heavy.
They usually do end up taking it out right away and drink it - the parents appreciate it since the kids have been eating candy, etc. out of their bags, walking a bit and are thirsty.
We do not get that many kids - it's been less and less every year.