Wellington said:
What, you don't enjoy it as much as I do?
I didn't say don't drink water, I said don't go crazy on it. As long as you don't have the bladder of an 80 year old you'll be fine.
And I'm not saying I get up every 30 minutes to pee. But the implication that ideally you shouldn't even go
once on a flight, especially a long one is a bit ridiculous.

Thirst is much more uncomfortable than needing to, well, go.
On CA to NY trips, I average about one trip to the bathroom per flight, with another
possible trip once I'm in the terminal. I don't think that's the bladder of an 80-year-old.