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 Why is my bottle top removed? Which items aren’t allowed in the arena? Where can I smoke? Will I get a good view from floor seats? Am I allowed to queue over night? Comments 0 comments Article is closed for comments.