Why am I asked to remove my bottle tops? The O2 27 February 2015 11:32 Updated Follow The tops are removed for safety reasons. Related articles Which items aren’t allowed in the arena? Why can’t I take a can or glass bottle into the arena? Can I take my bag into the arena? Can I bring a banner / poster to a show? Are there any places to eat and drink once inside the arena? Comments 0 comments Article is closed for comments.