If I buy discounted tickets (student, senior citizen, or other discount), do I have to demonstrate my eligibility for the discount at the event venue?

Beware that you might be asked to show your ID (student ID, personal identification card, etc.) at the event venue. If you don't show the required ID in combination with a discounted ticket, you might be refused entry to the event. The event organizer might also take legal action if unlawful action is suspected.