Good on you Sab!
Think of soft drink as your worst friend in terms that it actually makes you thirstier. Learn to love water (I drink a good 4L a day)- it quenches your thirst, good for you and fills you up.
Wow I just realised something about myself.. that's probably why I don't snack much because I drink so much water.
Just note though that too much water is not good for you (you'll know this when urine is clear-that's not good, needs to be straw colour)
I might get those little snack pasta pkts and have them before I go to bed, as I'm finding out from this thread carbs at night put on weight.