You do realize that you are referencing an old out of date form that is no longer used by Princess.
The official information is at Carnival Corporation as that is the provider of the shareholder benefit.
Please see https://www.carnivalcorp.com/static-files/bc1b7f04-a3e8-4176-91ac-a529290fe45d
It details terms and conditions and how to submit the requested information.
When I email I use a subject line similar to "Shareholder Benefit Request - Sailing date: May 7, 2023"
In the body I use this format:
"
Shareholder Benefit Request
Booking: XXXXX
Ship name: Crown Princess
Sailing date: May 8, 2023
Last name: LLLLLLL
First/Middle name: FFFFF MMM
Telephone number: 1 408 555 5555
Email address: someone@example.com
Attached please find brokerage statement 'First_Name_Brokerage_Statement-XXXX059-2023_04_20.pdf’
"
I then make sure to attach the brokerage statement which I have generated in a custom format from the brokers web site.
Putting the requested information in the body of the email means that there is one less attachment for the recipient to open. If a clerk is busy they are going to deal first with the messages that have the required information in the body and fewer attachments to open.
I get very fast turn around on my submission for Shareholder Benefit.