Instead of getting under pressure from such big fan followings, someone needs to teach them to take this love and affection in a way to further increases and boom up your spirits to perform even better.
The fear of losing should be overcomed by the will of winning.
They know all of this stuff already since this isn't their first time playing an ODI World Cup on home soil. They need to focus less on emotional stuff and more on practical stuff by thinking logically if you ask me.
This is something captains like MSD, Ponting etc mastered which is why their teams almost always crossed the critical line successfully.