I got used to Blackie drinking from the sink, but he has a lo-o-ong memory. When we moved to California, we drove with the cats in the back. Every time we stopped, I'd let them out of the kennel on the seat to use the box on the floor, and check their food and water them. I used to get a bottle of water and squirt it into a little dish for them, plus they had kind of a hamster bottle hanging in there, but it leaked quite a bit. Blackie, who likes running water, would drink from the bottle as I squirted the water out. Every time I have a bottle of water, Blackie tries to drink from it! He'll knock it over and lick the pop top thingy or he'll get in between me and the bottle and butt it with his head, until I poor a little water into my hand for him. Too funny! But I know where he learned that.
Fred is the only one who drinks from a bowl, and he drinks quite a lot, but only once a day when the water is fresh. Odd.