Well, look around if you'd rather, but i stayed at New York, New York about 8 months ago and it was just fine. Nice, clean, affordable rooms and not so many rug-rats running around that you would really notice. Hell, if you want to get technical, ALL of Vegas has pretty much been turning into a "family" type atmosphere for the last few years now. Honestly, the place is simply lousy with vacationing families. Man, you should have been there 10 years ago when i first visited "Sin City", by Jingo! Now THAT was the shit!
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* It's up to you, but if your "New York, New York" package is considerably more affordable than other packages you look at then i would definitely advise you to go ahead and snag it up--- i don't think you'll find the atmosphere of the place very much different from most of the other comparably-priced hotels in Vegas.