Why can’t I take a can or glass bottle into the arena? The O2 29 May 2015 10:23 Updated Follow Cans and glass bottles aren’t allowed into the arena for safety reasons. Related articles Which items aren’t allowed in the arena? Cancelled/Postponed Events - What Happens? Why is my bottle top removed? Wheelchair escorts? I have booked general admission standing tickets but my access needs have now changed? Comments 0 comments Article is closed for comments.