Are they using a script to print or selecting these options from the File menu?
What version of FileMaker?
Some versions are better at this than others, but a script with a print setup script can be set up to specify the ticketing printer and the desired options so that you get the same options every time.
And you should set them up with a script that uses Save As PDF instead of Print for generating the PDF file as a way to keep this action away from the print dialogs.
If all else fails, there's the MyFMButler plug in that adds the ability for a script to take much more detailed control of the scripting process.