It all depends on the JWs in charge, I imagine. The local JWs - when using public facilities for social gatherings - have taken it upon themselves to cover fixtures in the building that were considered to be idolatrous. One building in particular had a cross hanging on the wall, and extraordinary measures were taken to ensure that it was covered up during the JW gathering. Similar extraordinary measures were taken to hide said cross when it fell off the wall during the gathering and broke on the floor. There were JWs who were terrified to even touch the cross after they broke it, fearing that they may pollute themselves spiritually by touching the "idol".
A more superstitious bunch has never been seen. LOL
Love, Scully