Black Card members can bring guests with them at any time, so long as they don't bring the same guest every day. If you're a Classic member and you're bringing a guest who may sign up as a new member, the staff may allow them to train for free that day.When I went to PF to explore getting a membership, they let me work out as a guest at no charge, but I had to provide contact information and take a photo at the counter for their records. I didn't have to submit any financial information.