Rest Spot (Fortune, from the search deck) reads:
Play immediately. If there are no minions on the board, you may remove all wound markers from each mouse and place 1 cheese on the minion wheel.
If there are minions on the board, what happens? Nothing?
Quick forum scan seems to indicate that you might be able to discard the card for cheese but also say that you might be able to keep the card in your hand for later, which is not how I read the card. Any idea on more formal ruling/rules guidance?