I think maybe it's just a precaution they personally want to take. I don't see how if you get waxed 4 weeks prior that there'll be any "open" pores, pores are open anyway?? Understandably if there is a cut from shaving. Anyway I'll be booking in to see my beautician this week as I want to be all preened for the big day! LOL Luckily my hospital hasn't made any recommendations about such things.