You can now see and report on Availability Schedules!
Go to Settings>Basic>Spaces, and you will now see a column for Availability Schedule
And, when clicking you will see it in your exported Excel Spreadsheet
Lastly, you will also find it as a criteria option within Report Builder
Go to Reports>Report Builder and then choose either Space Usage or Item Usage under Report Type then toggle on the following:
Now, when you run a report with that criteria you will see it in your report