“Their biggest threat/worry is more rainfall”
It is monsoon season. The journey out is 5 hours.
Here’s the wiki,
https://en.m.wikipedia.org/wiki/Tham_Luang_cave_rescue
It goes into a pretty good detail of the situation on the ground. Amazingly the coach completely disregarded signs at the entrance of the Cave System which warned against entering the caves during the monsoon season as they are known to flood.
I had wondered if Thai officials had warning signs posted...well this coach is going to be getting some dirty looks for sure