Such places can be chaotic, full of drunk people creating issues with another drunk people from the rival team for banal reasons concerning the result of the match, especially due to taunts received from the opposite team or for believing the match didn't have a fair result or fair gameplay. I don't feel comfortable among these people, because they are risking their and everyone else's lives for nothing after all. It's dangerous to engage ourselves in betting in such areas, because it can awake the rage of a loser crowd of a team against you, in case you won a bet against their team. Of course it's irrational from their part to act like this, but that is the kind of environment which triggers the most primitive and irrational behaviors of human beings.

If you find yourself in such situations, I advise you to get out immediately and avoid crowds of people which will potentially prevent you from moving ahead. If any signals of fights and disputes are identified nearby you, stay away. It's the first clue something bigger and nasty is going to happen soon. And never try becoming the hero of the day by separating fights involving other individuals.