Here's what I would do: (note: I fully expect to be divorced in the future

)
There are plenty of gambling cruises that you can buy a trip on. They have other perks that the wife would definitely enjloy. Now, at my house, I handle all the finances. That means wifey doesn't see credit card statements and such.
So, I'd just book myself and the wifey one of those trips and

MAYBE

play it off like I won it.
It's not really lying if it doesn't hurt anybody.