FIOS telephone is not yet available. You will still keep your copper phone lines. Dont worry about it.
Umm, no. The copper wires are removed and replaced with fiber when fios internet/tv is installed. This is why there is a battery back up. It is used for phone service should there be a power outage. There is no copper to provide the electrical current for powering the phone.
I have heard people fighting with Verizon to keep the copper. Sometimes it works and sometimes not.