Creatine is a funny thing..
It all comes back to your own creatine levels. We get small amounts through food, particularly meat and various other proteins. But don't forget your body makes it. A good enough reason to cycle on and off.
Those people that are lucky and produce more and have higher levels (only biopsy can prove) won't get much if anything from creatine. No increase in water retention, no increased ATP synthesis and no increases in strength, size, etc.
Of course no effects or negative effects will occur also if the general dosing protocol is not adhered to.