Well, the receipt arrived on Saturday, and it seemed to be saying that we'd guessed the procedures correctly at least to the extent of putting in the right application with the right fee. So I'm hoping not to be told "that was the wrong form" or "that was the wrong amount".
What's this passport business anyway? We couldn't find a list of the documents to be submitted for my application, so we guessed, and a passport was not one of the things we guessed might be needed.