Regardless if it's waxing, electrolysis or laser hair removal on your brazilian area it's not going to feel very good. It's not your super sensitive area for nothing. But depending on where you go you can get prescribed medication and/or a topical to numb the area more. Just check around and ask on consults what kind of pain medications are available to you.
P.S. DON'T get drunk and go to laser hair removal treatment thinking it will help with the pain, this isn't like getting a tattoo!