This was my first time flying with Southwest and I must say the three things that stood out are: :
1. No assigned seats. ( I was not sure so I asked the attendant at the gate as we were getting ready to board)
2. To me carry on was much easier than another major airline. I was able to carry on my two luggage that met the carry-on criteria. I remember on my trip to California my daughter and I had to end up checking in two luggage as we were boarding. Why did they allow us to pass with these when we checked in the bigger luggage.
3. I had a connecting flight from BWI to Nashville. My Flight from CLT to BWI was very pleasant, not saying the rest of the trip was not. The flight attendants were very pleasant and when we arrived at BWI the flight attendant that was announcing our arrival made the passengers laugh with a witty statement she made. I liked that.