Casinos will need to convince the Feds and NGCB (in Nevada) that safeguards are in place against money laundering and nefarious sourcing. Add the $10K+ paperwork regs, the regs on "structuring" below $10K, etc. I think you'll find that casinos will be well behind other businesses in getting anywhere near Bitcoins, IMO.

The Nevada pot shops may be an early adopter of Bitcoins, however.

On a related note, in a recent Forbes article, it lists MANY other cyber-coins (maybe 25+ in the list), though Bitcoin is the best known. Who knew??