FaceTime on iPhone all night?

My friend and I are going to FaceTime all night, and if we both fall asleep we will still be face timing. Will it stay on? Will anything go wrong with my phone?

It may run out of charge
if your Wi-Fi or internet flickerrs itll be cut off

Your phone might run out of power, but nothing else unless you drop it or crush it or spill something on it or damage it in some sort of way.

I've tried it before nothing happens you just need to make sure your phone is on 109