My Parents will be staying with my wife and DS at BVC next week. Since this will be our first use of the DVC since joining last year I'm not sure how the use of the fitness centers is handled. I know as a DVC member that I have use of the centers without charge, do this also extend to guests who are staying with us? I think my dad would like the chance to exercise with me in the morning. A second question is how early in the morning do the Fitness Center's usually open? Thank you.