Originally Posted by
NGisME
You would be able to use buddy passes for your son. You can definately choose your son over your spouse as your 'priveledged flyer'

. And use buddy passes on your spouse.
No, you can't
From the "Travel Companion" section of the pass riding guide.
This option is only available to single, unmarried Crewmembers, who are not in a Domestic Partnership. Crewmembers that are married to other Crewmembers must list his/her spouse and cannot designate a Travel Companion. A Travel Companion may only be changed once every 12 rolling months. You may not solicit others for a Travel Companion.