No American casino that can't boot you will let you play without changing rules one you if you are good enough, unless they are a bunch of dimwits. Ok, so that means that there is a chance you will find a place like that, as dimwittedness is not really stretching it that far. Of course in other, certain *cough cough* countries, you can get away with BJ murder. They all know "counting" works but only one in a million "geniuses" can do it, and they have no idea how it works. They may try tactics like new decks and dealers or coolers, instead of no pen, pref shuffling and backcounting counter snatchers.