Hi Shelli,
I went to that site too and got my free $50, but didnt ask for the rules as far as what kind of bets you can make with the free chip, i just went along with what Mrthomas said, straight bets only. I lost my bet, ( $50 win mets ), so i looked into it no further. Contact support and find out what the cash out rules are, i'm sure they will let you know... i'm also sure you didnt need me to tell you to do that too! lol
Have a good one!
Trotter