Didn't anyone give Robert DeNiro etiquette lessons? If so, we sure wish he'd pass Mom's golden rules on to the hired help at the Gramercy Park Hotel’s newest gimmick, Wakiya. Seems like its co-owners thought they could re-invent the hospitality industry with this slick new Chinese joint; but you won't find any hospitality here. Excuse us, but no matter how zingy the Singapore Sling, some people like to feel welcome where they drop 100 bucks on a table. If you can get them to seat you, go for one of the house special martinis like the Honey Pear, Lychee or Jalapeño. All are designed by Nobu cocktail impresario, Santiago Rodriguez. As for the food? With the prices and attitude, you may do better with some cheap Chinese takeout.