Backpacks or bags of any kind larger than DIN A4 size. Any kind of weapons, including firearms, knives, pepper spray, tasers, or other items that can be used as weapons. Any illegal drugs or substances. Bringing alcohol into the arena is not allowed. Alcoholic beverages can be purchased at the venue's bars. Glass containers, cans, aluminum bottles, or thermos flasks of any kind. Laser pointers, pens, or other similar devices that may disturb or harm others. Fireworks, torches, smoke bombs, confetti, or glitter cannons. Professional cameras, audio/video recording devices, and tripods, as well as attachable lenses for mobile phones. Selfie sticks, GoPros, or iPads used for photography or filming. Banners, flags, or signs larger than A4 size or conveying offensive messages. Balloons. Use of shoes with wheels, skateboards, scooters, or rollerblades. Helmets and full-face masks. Large metal-studded clothing or large metal chains. Offensive clothing.