The good news is that the first press run of Innocent Monster sold out - in six days. The bad news is that some bookstore appearances may be postponed until books are in stock, and that you may have trouble getting a copy until the next press run is available in the next week or so.
You can call your favorite bookstore before you go, and ask that a copy be reserved for you. Or you can order the recorded version, done by the very talented Andy Caploe, through Audible.com. And more books will be available soon.