This is our first time flying southwest. We did not buy EBCI, so I plan to check in at 24 hours. I have my account set up on my iPhone. When it is time to check in, do I just click check in on the app? Will I need any other info? My flight is already stored in my account. I just want to be prepared. Also, my family is on one confirmation, so will everyone be checked in at the same time? Thanks in advance.