1) The water should not be an issue. They will pump it out before plaster and then prep the shell. Make sure that a hydrostatic vavle has been installed in the deep end so that if the ground water pressure gets too great it will pop and not cause your pool to float. 2) As I am in Georgia I am not sure of your climate or frost line so I can't answer this question. 3) They should fill the holes around your bubblers with Hydraulic cement and it is normal to have some erosion with Gunite.

Sceadu, thank you so much for your response!
Do most main drains have a hydrostatic valve integrated inside? I do not recall other plumbing in the deep end floor besides the 2 drains. There are only several weep holes in the flooring.

I was trying to learn more about hydrostatic valves and came across information on using a relief pipe or adding holes to the pool floor in case we would ever have to drain it without a hyro drain. Draining the pool is the only situation we would have to worry about the water under the pool causing it to pop up right? Seems like there may still be pressure under the pool when drained and weep holes filled in right before plaster. I'm still surprised by 3+ feet of water that came up into our pool from ground water after a hard rain.

Once the pool is full of water, the water in teh pool will equalize with the water out side the pool and all will be fine. The hydra valce is not part of the maindrains. If you are seeing weep holes in the deep end then it sounds like they have it set up for a hydrovalve.

Thanks again for your time with this!
"If you are seeing weep holes in the deep end then it sounds like they have it set up for a hydrovalve."

Since the pool is already gunited, there is still a chance we could instal a hydrovalve into one of these weep holes? This is a picture a few days after gunite, before the rain.

{{!gwi}}