I would ask the place where you are getting it done if they have something for sensitivity to make the visit easier.
Afterwords, apply cool aloe gel or lotion and avoid the sun, exfoliation, and use of very hot water/chorline treated water for 24-48 hours.
Afterwords, I would really look into keeping up with tweezing (with a darn good pair of tweezers) and maybe as someone suggested, take threading a try.
If you go with threading, please make sure it is in a salon and things are staying sanitary and have some privacy. I am not a fan of those kiosks in the mall where EVERYONE sees you and it isn't too clean.