Decoration Rule Question

I recently went back to look at our venue because I honestly didn't remember some of it (I took pictures, but that was more for reference when we discussed whether we wanted to book it) and I asked about what we were allowed to do regarding decorations. I realized I never asked about it so this was my chance to do so before I started buying things I can't use. So apparently, we can't hang or stick anything on the walls & they have piping? to use to hang things near the walls. The woman also told us about s-hooks to use on the piping or whatever? My question is what can we use if we want to hang anything else aside from the drapes they'd already have for us? What are the decoration rules for your venues and what are you planning on doing?