Speaking from experience, laser doesnt hurt that much, it beats waxing every 3 weeks!
I know everyones pain threshold is different but I found it to sting a little but be gone in less than a second!
I'd give it a 3 out of 10 for pain, 10 being the most painful thing you can think of!
If the therapist you go to is professional it will only take a few mintues to laser the whole area with minimal pain.
Hope that helps, good luck!