The Mars Volta Official Site Cain's Ballroom is a general admission, all ages, standing room venue unless noted above. All sales are final. No refunds. No re-entry. No smoking or vaping. Support acts are subject to change without notice. Tickets have a 6 ticket limit. This is per person, address, credit card, email, etc... Orders over this limit may have any or all of their orders refunded without notice. If you need help finding your confirmation email, please visit the Etix Order Lookup option. There are zip code restrictions in place. If you have any questions, please reach out to Etix Customer Service.