Flight to MCO for Thanksgiving is sold out so, for a family of 2 adults and 2 children (1 yr old and 5 yr old) would it be smart to pay for Early Bird check in or is there a chance during Family Boarding that 4 people in a family (really just 3 seats since one traveler is a baby) could have seats together? Would everyone need to buy EB check in? Thanks! Our family does not fly SWA very often and I am trying to help my son and his family figure out what to do! Any tips would be appreciated! Happy Thanksgiving, everyone!