My experience was a walk-in interview for an event they had. From that interview, it was to get to know a lot about your mindset and felt very "culture fit" focused. Connecting with them was huge from my perspective - think to "humanize" the conversation (as opposed to being super professional). After the interview, it took about 2 weeks to hear back before I received an email with the offer.

Standard application followed by face to face interview. Questions regarding skills, knowledge of fitness, comfortability with speaking to members. Lastly completed a series of online training videos and corresponding questions.