Has anyone ever tried this with Kindergarten? I have a drinking fountain right in my room .... but sometimes I get annoyed with how many times kids are up out of their seats getting drinks even when I encourage them to make good choices of times to get drinks. I have also sat through many of workshops where they mention that well hydrated kids perform better. I keep thinking/wondering if my kids could sip on water throughout the day that could be a plus! But would it be a nightmare on the same token? I look forward to your advice/experiences!