Chilli is the important item for Indian dishes. Small and green chilli is hotter. Don't take chilli alone. It would attack your tongue. Water and sugar can't help you at that time.
Rice is only way to survive from a pungent taste of chilli.
You can drink tap water in urban area. People at the interior doesn't have water supply and they treat rain water to change to drinking water. It's also safe for me. Bottled mineral water is sold at any supermarket, but the price is high as compared with other daily item. You can taste Fiji feeling by this.