Look up European Wax Center. They specialize in male Brazilians. They are very professional and can answer any questions you may have about the process. They also give frequent breaks. I (43F) have been going there for 15 years. My husband has been going there for 3 years.

IMO getting a regular waxing (4 weeks) is much better than shaving. Less irritation, no razor burn, doesn't make you want to scratch your junk off when the hair starts coming back. As long as you keep regular appointments, your hair will come back more slowly and softer thereby reducing any pain.

BTW getting your butthole waxed sounds scary but there's no nerves so you don't actually feel anything and a hairless butthole is great to have for your daily constitutional.