The requirement is 8 cups a day if I remember correctly. That is really not all that much. I can't drink a ton of water either. I am in a classroom and cannot be running to the restroom every hour.
I hate to say this and please do not blast me but I really think the water is a good idea but it will not make or break your weight loss. What DOES is the points, measuring, staying on CORE (if that is what you do) and getting some excercise just speeds along the process. I can loose without exercise yes....but with it I loose faster and look better.
(I know this because I have not exercised in a while

and even though I weigh less than I ever have...I look a bit more flabby....

)