Tickets cost $200 (£148) for a couple and $25 (£18) for a single woman, but "unescorted males" are banned from the event.
However, the organisers do say they "will make a few exceptions for respectful single gentlemen to attend with couples/groups".
The current documented record for the world's largest orgy reportedly stands at 500 people (250 couples), set in Japan in 2007.
But Menage Life, which is behind the Vegas attempt on the evening of June 2, has promised to "blow that number out of the water".
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