For shows where tickets are sold in advance: most shows have a limit of 10 tickets per order, but this may vary depending on the show’s capacity. If your group is larger than the ticket limit, you may need to split up into multiple orders.
For free, independently organized shows: you can request to bring one guest with you when you apply for tickets. Just make sure you add 2 tickets to your cart before checking out (they'll still be free)!