This breakfast is fast becoming almost as hot as breakfast with Cinderella at MK. But did you know they now serve lunch and dinner as well? They started on April 10. And CRT will be serving lunch as well as their breakfast soon. So it might be a bit easier than you think.
These are tips for CRT which would work just as well for PSB:
What the CRT thread said to do was to begin calling the Disney Dining number, #1-407-939-3463, (not the 800 number, they say that causes delay) at 6:58, if you hear the message saying "sorry we are now closed" then hang up immediately and hit redial. You will then get a message (I got it at 6:59) that says something to the effect of "Thank you for calling Disney Dining, we are currently experiencing very high call volume, you may experience signifigant wait times (I am paraphrasing here) thank you for your patience and understanding". When they are finished saying "understanding" press 1, and then 1 again on your phone. This bypasses the messages and gets you right to a CM. I had a CM pick up right away. You can also get the regular opening message , it will say "welcome to Disney Dining ...... If you are calling for Victoria and Alberts press 2" - immediately when you here this press 1,1 - again you will get put on hold for a few seconds , do not hang up and you will get through.
Be sure and do a test call before you actually call.