Buy tickets online.
Almost buy tickets to see what your patrons would see when they buy tickets.
Click on the top link in the Management panel of the dashboard (View shopping page). Make sure you buy enough tickets to see at least one at every price and in every section, if you have more than one. Keep in mind that this step will help you decide if your patrons will be able to buy tickets without help.
Credit card charging is live, so stop just short of confirming your purchase. Click the Cancel purchase button at the top of the final Review tab instead of the Submit payment button.