Not everyone can do that. I can't, so abstention is my only option.
I attend church weekly, and in the Chritian church I attend, grape juice is used in place of wine, as in the case in conservative non-catholic churches. When I attend church out of town, if they will serve communon, I ask if it will be juice or wine. If it is wine, when I approach the alter I will take the bread, but cross my arms over my chest when offered wine, which is the universal sign of abstention in such circumstance.
Bet you didn't know that.
Yes I support the use of grape juice in this situation. I thin scripture addresses it.