Amazon Guaranteeing July 16th Delivery
Amazon.com is now guaranteeing delivery of Harry Potter and the Half-Blood Prince on July 16th when ordered with standard shipping (note: not the free super-saver shipping). Some other restrictions apply.
Thanks to HPANA and those who e-mailed for the tip.
UPDATE: As per the message in the restrictions, if you have already ordered the book from them, you can upgrade your shipping option to ‘Standard Shipping’ in your account details to receive the book on the 16th.