I'm getting a bit ahead of myself with drink planning already, but my in-laws-to-be were asking about this.
For our drinks reception, we're probably having kir royales made with creme de mure (with a blackberry and a sprig of rosemary), plus beers (and the option of plain sparkling). For the non-alcoholic option I was thinking of blackberry cordial with the same garnish but I am worried there is a risk of them getting mixed up as they will look exactly the same! I could maybe ask for mint instead of rosemary in the non-alcoholic one. Am I overthinking this? We would also offer orange squash for the children/ those who would prefer a still drink.