I'd like to use PartnerPlusBenefit points for an award flight. I'm considering bringing my <2 yrs old baby along in-lap (no extra seat) to drop her off with grandparents who haven't seen her in a year, while I'm attending a week-long conference.

Has anyone tried this? Will they allow in-lap infants added on to a PPB ticket, given that the PPB program is only for company employees? Any idea what extra fees will be?