Music production, recording/mixing studio question

Hi guys, any Recording/mxing studio and music producer here ( tv and film also ) ? I have some question !

1- When you have a contract with a film producer ( to make a track ), do you need to make a bussines trip or you can do all via the internet ?

2- As a recording studio and mixing studio can I do that on the day only or I will need to work late in night or day ?