It took me nearly a year of hormones before I started laser! I didn't have much facial hair to begin with, but still, there was a slight shadow on the moustache area after shaving.
I was really nervous about seeing the laser tech. All the places I'd gone prior - my doctors, my therapists, meeting other trans people - these were all 'trans-friendly' spaces, and I was never nervous about these. But going to the laser place I felt very nervous, and so many thoughts ran through my mind before going in.
Well my worries were unfounded. I went in for my appointment, and the girl who operated the machine expained the procedure for me,and she asked what I wanted done. I told her I wanted all my facial hair removed, and she looked at me and smiled, and told me that I have a really smooth face without that much hair, and that she would charge me at the girl rate lol. Anyway, I explained to her that I'm trans, and that the smooth face is from hormones. She smiled and nodded, and after that kept calling me sweetie during the whole thing.
So really, there's nothing to worry about. I think at a lot of these beauty places if you're presenting as a guy and tell them you're trans, and you're kind of shy but very friendly, they'll be really nice to you.