From their website:http://www.redrocksonline.com/pages/...ns/faq.html#07

Prohibited Items
• Unsealed plastic containers (i.e. water bottles) Thermoses, bota bags or wine skins
• Alcoholic beverages or illegal drugs
• Glass bottles or aluminum cans
• Laser pointers (will be confiscated & patron is subject to ejection)
• Ice chest sized coolers larger than 12" x 17"
• Recording devices (audio, video or cameras as restricted by show)
• Any weapon or item construed as a weapon such as guns, knives, sticks, fireworks or firearms
• Bullhorns or noise makers
• Framed backpacks
• Lawn chairs
• Grills
• Confetti
• Animals (except guide dogs)
• Skateboards or in-line skates
• Chains or jewelry with spiked edges