If a player has 3 utility cards in play, to play a 4th utility card the player must discard one utility to make room for the 4th. Does the player have to pay an action marker to discard the utility, in addition to the payment of an action marker for laying down the new utility?
Jambo is a great game. : )
Anyway, you don't have to pay an action market to discard the utility. You just spend one action of put out the new utility and in place of one you discard.
A tip: you can actually spend an action to use the utility before you replace it with the 4th (now 3rd) utility.