Who would I ask if I wanted a retired deck of cards, or dice?

Gift Shop

The front desk

Pitboss

Floor manager 😀

Buy at the gift shop

Gift store has both.

I would check the gift shops and be sure to ask if they know who might have them, if they don't have what you are looking for. They seem very friendly and helpful. They will tell you who has, or might have what you're looking for.

Gift stores often sell retired cards. Not sure about die.