I'm not much of a gambler, so I'm going to pick South Dakota, only because I could drive there in about five hours or so. The other two would require quite the road trip or a plane ticket.

Lets see...

Atlantic City is a nasty toilet.

South Dakota is bad indian casinos on the high plains.

Vegas is a tawdry old whore, but at least she still can show you a good time. Of these three, go with Vegas, but personally I'd opt for Monte Carlo. 

I'd go with South Dakota because its the destination where I'm least likely to see a marquee with the name Celine Dion or Rod Stewart on it.

I don't gamble, but Vegas by default because I hate driving in New Jersey with the tolls and traffic. Have never been to Vegas. South Dakota is WAY out in the middle of nowhere- they still have dinosaurs and Buffalo Bill out there... too cold- so cold that if a certain reviewer moved there he'd have to change his name to Fridgewalker...

Gotta love Vegas. Say goodbye to your wallet.

Can't stand any of these, but Las Vegas still has a bit more character left in it, as opposed to the other three choices. Atlantic City is dump. South Dakota I don't know much about as a gambling destination. I will say that Vegas is becoming very expensive. But then again, what isn't becoming very expensive!

Las Vegas would be a blast. That is actually on my to do list for this year. I can't wait.

Oh yeah I wanna plan my honeymoon in South Dakota...the bright lights of Souix Falls are just spectacular arn't they darling? Corn Palace or bust baby... Yee haw!!! LOL

I don't gamble, so I don't care much either way; I haven't been to South Dakota, so I can't really make an informed decision about that. Between AC or LV, though, I'll pick Las Vegas; the architecture is nice, and if I go out a little ways, the clear desert night sky is phenomenal. Yeah, you've got the beach at AC, but it's so dirty that it's not worth it.

Viva Las Vegas, baby! It's the only place you can blow a wad of money on one helluva great time...and the gambling is fun too.

This is an absolute NO BRAINER! I'm actually heading out to Vegas next month for the 9th time (this time for my bachelor party). I love it there, gambling, food, clubs... ya can't beat it. I grew up 40 minutes from AC. The place is a dump!

Hate gambling, so I'd take S. Dakota where I could at least find a quiet place to read a book.