Game uses microphone?

I have two questions because I’ve beat the game like 4 times now and I’m still confused

1: shipwrecked 64 has access to my microphone and I might be remembering things wrong (or I had a dream about it) but I remember the game saying something about using my microphone, can anyone confirm or deny this

2: I also remember in the settings there’s an option for like online connection or something? I don’t remember EXACTLY what it said but I remember it saying something along the lines of “opening the door for a guest”, what does that mean? I’m scared