can my personal hearphones be paired with the bluetooth in the theater for better hearing?

No you cant. But as Warren said, there is no need.

Hi Elaine, We offer assisted listening devices at all of our locations! If you are in need of a device, please let one of our staff members know and they will be able to get you set-up.

Not that I know of... I don't think you will need them... The in house Dolby Surround sound is A+++...