Thanks for all input everyone. It would be a lap baby.
I know there are going to be people who are pissed, people who don't care, and people who are nice to the baby because they are normal nice people. I generally think its ok to be in first with a baby, as long as you are on guard at all times and do your best to soothe the baby if he/she starts crying. If the seatbelt sign is off maybe go for a quick walk ( dont' want to upset the economy passengers though !!)
My dad who is Global Services would just be a cranky jerkoff about it. Maybe it's the fear he's instilled in me.