I used a prep service but they didn't ask me. In spite of the stress of an interview, I actually kind of had a good time during the visit and that may have showed. From start to finish I treated it like a tour of a great company I wanted to join, and the interviews were scheduled times/places to chat about mutual interests.

Enough of me talking about me, what do YOU think about me?

Not really, but the interview prep helped me relax by helping me identify what I could talk about that would let me show my experience and personality without it degenerating into me trying to brag on myself. Woven into almost every story was a lesson that kind of fit into how SWA works. The interview prep didn't give me canned responses, but it helped me better show how my experiences have prepared me to work at a company like SWA.

Plus, there are other more subtle parts of interviewing that the prep team helped me with. Like reminders of how and when to build rapport with the individuals you will meet during the process. That kind of thing turns the interview from a mechanical Q&A to a discussion between junior and senior colleagues, letting you get across the exact same information but in a much more natural and relaxed way.

Could I have done that without the prep? I certainly would have tried, but the prep was great practice and pointed out a few areas where I wasn't quite going about it in the best way or where I was skipping opportunities to turn an interview into a discussion. I didn't give the interviewers a single story or answer I got from the prep, but the prep helped me get my story out there in a comfortable way.