Do I need to issue different QR code tickets for each day of a multi-day event to the same guests?

No. You do not need to create separate QR code tickets for each day when using QRCodeChimp's Event Ticket QR Codes.

If you enable the Reset Lock Daily feature in the Lock QR Code settings, the scan limit for each ticket resets every day at the time you choose, based on the selected timezone. This allows the same ticket to be reused across multiple event days without issuing new tickets.