Yes, always start by dipping the chick's beak in the water till they know what it is.
With several chicks, that isn't necessary. One will discover it and teach the rest.
Theoretically, they don't have to eat or drink for a couple days. But the sooner they eat the better.
Usually people wait till all are out of the shell but you still have to play it by ear.
Congratulations. That's good news. Just sit on your hands. They hatch or they don't. Once you get to the end of incubation. All the difference you can make is long past. The only thing left is assistance and that rarely goes well for me.
Till they hatch.
When a hen comes off the nest or if the power goes off while incubating, hatching will be delayed by a lesser amount of time than the period the power was off but not by the same amount of time so no one can tell for sure how long. Only the embryos know.
The only way to predict...
Well that explains it. So for about 10 days, they weren't incubated 24 hours a day? That means cell division ceased each night when internal egg temperature dropped below 84.5 F, cell division ceased. Hopefully, all the time between 84 and 95 didn't cause enough disproportional development that...
No longer seeing the air cell is a good sign but no pips at day 25 isn't.
You are sure you set the eggs on September 29?
How are you measuring/verifying the temperature?
Were the eggs fresh? (under 10 days old)
At 100F throughout, I would expect most of the eggs to hatch about 12 hours early.
If...