Can confirm. Thirsty for years. Me and my brother both. To the point when people would be like "here, try this food item" both of us would normally refuse, because eating made the thirst too much to bear outside of meal times. I would drink 4-5 16oz bottles of water every night. I'd take em to bed with me, and they'd be empty by morning. Most of the time i wouldn't even remember drinking them. I'd wake up, drink, sleep, wake up, drink, repeat.
Turns out both of us had really bad A1Cs. Mine was 12.4, his was 11.8, i believe.
It's really the best. I have a 1 liter and a 2 liter. The 1 liter i use around the house, the 2 liter i take with me when i run errands, especially in the summer. Ice water all day. It's amazing.