My kids generally aren't allowed juice. On very rare occasions I might let them have fresh juice (like maybe once every 3 months). They only drink water, milk and home made smoothies (which consist of fresh fruit, Greek yogurt and milk). They are (almost) 3 and 5. When we go to the snow we also let them have hot chocolate but this is a very special treat. Basically we try to be very strict with sugar, and they have accepted that it's just not allowed. Today we went to a bday party and they got lolly bags on the way out, they didn't even argue when I removed all the lollies/chocolates and put them in the bin, leaving just some little toys inside.