Well, I guess if I searched the correct forum, I could find my answer.. searched the Princess forum and they all seemed to think that it was not very good or hit or miss... Seemed it was taking 45 min to 1 hr to get your order... and one poster said that the app would tell them that they could even deliver it at that time. Said it was WAY over promised.
So, there is my question, and my answer! happy cruising.