So ... in a situation like the OPs picture, you're using glassware? I'm a backyard bbq/party, you're using glassware?

When we sit down to dinner with friends/family, we use normal glasses, but when we're having large get togethers we use the disposable cups. In my house, we've switched to aluminum ones though as they can be reused and when they get too difficult to clean, they can be recycled, but they're basically the same thing as the red solo cups.