I went out a few weekends ago and whilst all my friends were sipping Champagne I had sparkling water in a flute glass - felt very bubbly after sooooo much still water!!! mmmmmmm
Well, allowed or not, I cannot drink my 3-4L if I don't have at least 1L of fizzy water as a treat! I use my soda machine with plain water and then add a bit of orange flavouring. Mmmmmh