Many exchanges declared that they will distribute BCC to their customers, but in terms of gambling sites - that's unlikely to happen. Then again, if you hold significant balance, you could get in touch with site operator and ask them nicely whether you could get your share of BCC, if they value you as an investor/user, then there's a big chance you'll get paid.

We are going to pay out BCC to investors and players. Here’s the details how:
Every user with a total amount (active balance + investment) of more than 0.01 BTC on their account will be eligible to claim their BCC. At the point of the fork, we’ll create a snapshot of user balances and everyone will receive the equivalent to their BTC balance in BCC.