Fortunately, this stage of dadhood has a definite benefit. Ever seen a Dad with kids over 5 who is reed-thin?
Free tip of the day #1: Take advantage of any assistance or prioritization offered at any stage of the process: check in, the security line, the food court, or boarding. The way Dad U sees it is that you have signed up for numerous years of exit row-free travel, will spend a far greater time that you expect in bathrooms, plane isles, and the standing room at the back of the aircraft in an effort to do what you can to make the flight as smooth as possible for all concerned, so you may as well catch a break every now and again.
Free tip of the day #2: Find the elevators rather than attempt the escalators if you are pack-horsing. Trust me, that one was learned the hard way.
-eventually they carry their on stuff