Yes, just make sure they bring a short note (example below) to explain you are happy for them to pick up/use the tickets on your behalf.
I ________ authorise ________ to pick up/use my tickets (order number ________) on the following date ________. If you need to contact me, my contact number is ________.
Please note this procedure is not applicable to Merlin or Chessington Annual Pass collections, where the cardholder must be present to collect.
We hope this answers your question.