Tahoe is a tough market. Prices should be way higher for what you get in my opinion. I'm not in Tahoe but I can sleep 16+ people at my place and I have more problems when I have the price lower.
I had guests complain once that there were a few things in one of the bedroom closets (still tons of storage for their stuff), some things in a small pile in the garage and some food in the cupboards (usually have ketchup, hot chocolate, popcorn, etc).
I had my head of turnover go over and chat with them in person and removed all the stuff just to be nice. She told them that some of the things were destined for Goodwill and then the lady who was complaining started picking through it and her tone completely changed! They also showed up with a small towable U-haul full of stuff and a crazy amount of canned food for a short trip. This was a big trip for them.
So sometimes people are just unrealistic. Complaining about some things in the bedroom closets - you're staying at my house! And the stuff in the pantry is for you to use!
However, some people are spending a lot more of their money proportionately and they have different expectations because of this. They want everything to be perfect. Maybe they're being guilted by their spouse or family for spending that amount. They'll complain about really trivial things.
I don't really like instant book because anyone can book. You have to do legal discrimination - AirBnB doesn't do much to help and hosts are often hesitant to leave bad reviews on renters for some reason.
We had a group of 30+ sorority girls message us wanting to stay. Legally we're approved in our area for 16; if you're doing it right and you pay your TOT taxes and are registered - you get approved based on square footage. So of course we declined their request. If they instant booked, I'm not going to be able to kick them out, I'll get more wear and tear, and I could be fined by the city or get my license revoked. Not worth it.
I see why Airbnb is pushing instant book but not participating helps me minimize risk.