When performing a CAT I ILS, the airport's LVP and ILS category status is irrelevant. What counts is that the ILS is on and the reported RVRs (not cloudbase) are at or above your minima. Only when operating to less than CAT I minima are these things important. Then, assuming you have had the appriopriate training and the aircraft you are flying is appropriately equipped and certified to operate less than CAT I do these things matter. Even then, expect huge variations amongst various operators.
PM