Originally Posted by
beckoa
In the main cabin, I think its 3. However it may have changed since the water service has been added.
Can always go back to the rear of the aircraft to resupply if "thirsty"

My last 2 transcon trips I was denied additional drinks by the FA's in the back. "We're coming back soon, we'll get to you then."
Edit: I fly PDX - MCO often and I've typically seen 1-2x water service and 3-4x drink service.