Why is there "in" before "here"? What is different from just saying "Is everything okay here"?
Answer from a Native speaker
Good question! "Here" is used to refer to "the place we are at." This can be a place or organization, such as a company building. "In here" refers to a more specific, enclosed space, such as a room in a company building. In this script, "Is everything okay in here?" refers to the room that is being occupied in particular. For this context, "is everything okay here" and "is everything okay in here" mean the same thing. Ex: I worked here at this company until I found a new job. Ex: She used to work in here until the room was reclaimed for storage.