I dont drink tea or coffee, purely because I'm not a fan
But love water, or soda water if i'm out and fancy something carbinated but free. i'm not a big fan of fizzy sugary drinks, but of course I have diet cola to go with my Rum or JD. and cider for the days where i dont fancy spirits but i'm out.
can't you just drink cordial / squash then its not fizzy, not sugary and is flavoured water.