Is stopping at every water station necessary?

Running Flying Pig on Sunday. Currently insane due to taper crazies and obsessing about everything race related. This is my second marathon and before my first everything I read said to hit every water station if possible. Looking at the course map, the race has like 25 water stations and I feel like hitting every one of them is excessive. I mostly trained without water during this training cycle and am not hoping to run much harder than I did during training (aiming for 9/mile race pace vs 9:30-9:45/mile in training). It’s gonna be pretty cold on race day too (37F at racetime, low 50s when I finish).

How many water stations should I plan on hitting?