I'm flying on Southwest for the first time to Vegas. I will leave on a Wednesday and return on a Saturday for a quick trip. I'll be flying from Burbank. Since this is my first time flying on Southwest, is there any tips or info of what to expect. I read about the cattle call. I will be traveling with another person. I read about the 24 hr check in before the flight. Usually what boarding position will that get you? Any info would be greatly appreciated.