AC Heat
As you probably already know, it is illegal for a casino in Atlantic City to bar a card counter. What is most likely to happen is you will be either flat bet or half-shoed. There have been very few reports of trumped up charges or fliers being distributed...and in all cases these measures were due to cumulative wins at a much higher level. This does not mean they will let you play unattended. One favorite ploy of the critters is to try to intimidate you into not playing full throttle. I wouldn't worry about heat at a green level. I would try to find the best games possible. There is more sweat than heat on the boardwalk.
I have included a link to the most recent Blackjack Insider report on Atlantic City. Alene posts these every month and they are the most accurate and comprehensive reports available since Blackjack Forum no longer is published. Of course mileage may vary since conditions fluctuate like the tides. Without the resort atmosphere of the summer, you may find the best conditions of the year at present.
If you are uncomfortable with the attention, just go to another casino.