Airbnb-I have airbnb properties that i do not use personally. They are offered for rent 100% of the time but don't get rented everyday. yes or no to"rented every day"?

Yes, rented every day.

"You place property in service in a rental activity when it is ready and available for a specific use in that activity. Even if you aren’t using the property, it is in service when it is ready and available for its specific use."

IRS Pub. 527 - Residential Rental Property (pg. 9)