>If you want a cold drink that isn't sweet, your choices are pretty much alcohol, alcohol-free alternative, water.

Uh, no.

There's also seltzer, flavored seltzer, flavored water, iced tea, iced coffee, herbal infusions (like hibiscus, rooibos, honeybush, etc), broth, milk and plant based milk alternatives, and fermented drinks like kombucha + kefir. That's just off the top of my head.

Hibiscus even has the benefit of helping regulate blood pressure.

I almost never drink sweet drinks or plain water and rarely drink alcohol. My fluid consumption is almost entirely: hot tea, iced tea, kombucha, and hibiscus infusion. Sometimes seltzer. Sometimes coffee.