Steve,

Here's what I would do , If I were you - That's the key ..being you.

walk up to the craps table , drop 10 $100 bills down , say 2 purples please. put 1 in front pocket. take other , gently toss in middle of table say SIXTY THREE ON THE HOP , watch dice and walk away . Now you have 1 $500 chip.

Don't tell anyone my secret