Hurghada hotel gives only one key card - how to keep AC running when you leave the room?

If reception won't give a second card, insert any plastic card (even a discount/loyalty card) into the power slot before leaving the room - this keeps the AC running while you're away.

In practice, reception often refuses to issue a second key card, claiming they're out of stock, and tells guests to come back the next day - this can repeat daily.

One workaround for the single-key-card issue: leave your room without the card on day one and go to reception - they may issue an extra card without much hassle.