Here, at least, there's a fair bit of work involved in getting bottles exchanged, you have to go to redemption centres (not grocery stores like in QC) so at least the kids/parents have to go through some effort for the reward.
However, if my 2 bags in the garage get full before someone comes, I'll take it to the redemption centre since I need the space, and there's a place like 1.5-2km away now.