The Role of Wine in the Lord's Supper

I have a tough time imagining in an American or Western context how grape juice or wine neither would be available. We're only down to punch. It's our only hope for celebrating the Lord's Supper. Is a wafer bread? I mean, really? Because it sure don't taste like it. If you use wheat thins, I'm going to more likely object. And you may be because of a kind of commercial snack association. But these vague little things, those white round things that are terrible.