What happens if I turn off instant book? Got a somewhat disrespectful guest.

[Jennifer1351]

Hi, I live in the lower level of the separate space I rent out. Today I have a disrespectful guest. First, she never responded to my pre-stay message - this is the first person who hasn't even acknowledged my message, which included asking for an approximate arrival time. The first guest who ignored me. Then I find out there's at least one additional person (reservation has 2 guests). Also, they are either smoking or have a very strong smoke stench on their clothes. I can smell it wafting through the floor,  and under the doors. I can't believe they would actually be smoking when I live in the house. Also I think the smoke detectors would go off. But it just smells. And I have a nice family coming after they leave. They also left lights on (not uncommon) and the TV. I don't want to have people like this in my home if I can avoid it. I will see tomorrow after they leave how bad it is. Maybe I'm overreacting, but I don't want to live with this uncomfortableness - it's not worth it.  I thought turning off IB might help me feel more comfortable with who is coming to stay. Any thoughts? 

[Jennifer1351]

@Sarah977 Thank you for taking the time to share all of this. Sorry, I missed seeing this earlier. I appreciate your feedback here and in so many other posts. I (think) would prefer not use IB, I would like to know more about who is coming into my home. Makes me feel more comfortable,  but also makes me concerned that somehow bookings will decline though. Still figuring it out...