When you are logged in as to the administrative side of your site, you may switch to the reader experience at anytime by clicking on the link at the bottom page. Clicking on "View Reader Experience" will take you to that account's view as a patron. It does not mean you can see the view of the reader whose page you have pulled up to view. Rather, it is your account's view as a patron/reader.
The best way to see what your readers see is to create a test account. Set up an account by registering as a family through your site's landing page. Then log in with that test account to see what your readers are experiencing!