It is not a question, but more a warning. My very expensive coat got lost after I did not find the ticket for cloack room (at last P1 party). The personnel totally refused to look for my coat together according to the coat description, and was extremely non-cooperative. The latter discussions were not very productive, I was merely informed after several days that the coat did not appear and I cannot have any claims due to lack of physical proof.
Please watch over your stuff especially in P1 club since it cannot be excluded that your expensive clothes can be noticed and stolen. You cannot count on constructive help from the side of personnel. Hopefully similar situation will never happen to you.