I've flown SW and saved seats depends: If the gate attendent says the flight is full or nearly full: I do not. If they says you can spread out. I do.We have used SW many times and PREFER open boarding. I have never been separated from my children on SW, nor have I purchased ECBI. I have, however, been separated from my children on both JB and AirTran with seat selection. On AirTran, I had to pay $6 or $8 per person for the privilege of having no seats together to choose from. I couldn't even get 1c/1a together either time. My kids like to fly SW, because they know we always get to sit together, so long as checking is done in advance. My most recent flight was the only time I've ever seen people try to save seats. I don't agree with that.
Most people will switch seats to allow you to sit with your kid. because, honestly, most people don't want to sit with your kid (or mine)
