I'm a bit surprised the majority opinion on here seems to be "don't bring the kid." A four month old is generally just a portable eat-sleep-poop machine; a two-year old is a whole different animal (literally). I think you should definitely plan to bring your wife AND kid. You have a myriad of options on the day of depending on how the baby is doing. If my wife were there, that baby would be constantly held and entertained.