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If you yourself are over 25 then I highly recommend a companion your own age for the dinner date. If you are under 25 then unless you want your business associates to think you are just a couple of Kids, who they are not going to take seriously, then choose a companion older than you who can make you look more sophisticated.  
Since your sexual tastes are geared toward the more nubile, say "good bye" to your dinner companion and have a sweet young thing waiting back at your room.
Better yet, create a fun roll play out of it where the one passes you off to the other at the bar... Now my mind is wandering about what a fun set up that would be.

Do you live in Vegas or are you here on business? If your from another place you might want to think about the impression you'll leave with the people your having dinner with. I have had a coworker do this very samething and everyone at the table saw what it was. Of course he denied it. But that dude is screwed now. He will never move up in the company. The people up the chain of command lost respect for the dude. I would keep business business and play another time.