I can only tell you how my Travel Agent does things. She doesn't like the $25.00 fee , but her agency (the "boss" ) requires that she add it to the price of a cruise. After our first completed booking with her, she's taken the fee off all of our other bookings at final payment. (I suspect she's taking it out of her commision.)
As long as they are upfront about it, I don't have a problem with a TA charging a small fee.
"A truly happy person is one who can enjoy the scenery on a detour."
Golden Princess 2009Carnival Conquest&
Grand Princess 2010Island Princess&
Grand Princess 2011Carnival Magic&
Carnival Dream 2012Island Princess&
Carnival Magic 2013Carnival Legend 2014&
Carnival Magic & Coral Princess 2015
Carnival Liberty 2016