Stop in for a cup of coffee

Ben when you leave do you turn the water off at the Oklahoma house?? I do and always wondered after I turn it off if I should drain the water left in the lines??
I do shut off the water. I drain what I can at the lowest spigot. Gets most water out. House is all PEX plumbing so it has some flex. Seldom is there an issue unless it gets below 0 for multiple days