First trip to Atlantic City, which casinos?

[Eponymous]

Since the OP is only going for a day trip, I agree with going to the Borg. I wouldn't go anywhere else except for the fact that I can't afford to stay there (or at least don't want to pay that much) and I can't get the poker rate for a room anymore. When I'm staying for a weekend or longer, I like staying at the Trop, which also allows me to hit some other rooms like the Taj for a change, and I can still drive over to the Borg after putting my 4 hours in at the Trop.