I'm bring my son for the first time he's going to be a year old by the time I'm down there, do i have to pay for him? Or what?

Yes but if he meets the height requirements and can ride the baby rides does it cost anything?

I dont think you pay for any entrance... But just be sure the season your going stuff is open bc if its slow... Rides and and a lot of other stuff is closed. You pay for parking. You pay to play games and food. And then its purchasing tickets for rides, if they are open

There is no fee for admission onto the pier. You pay for games and rides, but I'm assuming you won't be taking him on the rollercoaster or Ferris wheel