Video Poker Double Down????

What happened to the double down buttons on the video poker machines? Just returned from the Carnival Inspiration and the double down feature is gone. Was just on the same ship in Oct and it was there, went to Vegas in Dec and all the casinos had removed the double down feature and was in Biloxi last month and they were all gone there as well. I love playing the double down feature, what happened, did I win too much money???

I enjoy those machines, too! But, I usually lose! Oh, well!

ON any of the IGT machines all you need to do is ask one of the slot people to turn on that feature, all IGT machines have it.