I went to http://www.vegas.com/giftcard/ and clicked on FAQ page.

Q: How can my Gift Card be delivered?

A: VEGAS.com Gift Cards are delivered by email. Email delivery is free. The recipient will receive their Gift Card code directly to their e-mail account and can use their code immediately online and by phone.

It sounds like you get a code via email, not an actual card for redemption. They have this contact number in the FAQ page: (866) 998-3427