Streetside BBQ and hand-pulled noodles options abound in the early morning hours. Places with a bathroom, electricity, and chairs are a bit rarer. Here's fifteen or so options, from veal Grenobloise on the Bund to Cantonese greasy spoons, and their NYE closing hours:

Mr & Mrs Bund, the elegant queen of after-hours dining, for Paul Pairet's worldly French (until 4am); 24-hour delivery from McD's or Melrose Pizza; Anadolu, for doner kebabs in the Hengshan Lu area (until 2-3am); Hengshan Cafe for satisfying Cantonese right down the street (until 3am); Tsui Wah, for beef noodles and fishballs (until 2am); Xinwang (until 6am), Bi Feng Tang (24 hours), or Grandma's Kitchen (until 4am), all veterans of serving cheap and greasy Canto classics to sauced clubbers; Charmant and Bellagio for their classier Taiwanese cooking, and classic Taiwanese iced desserts (both until 4am); drunken dipping at Hot Pot King, Xiao Fei Yang, and a bevy of other hot pot joints (until 3.30 and 4am, respectively); burgers and milkshakes at Bistro Burger (until 4am).

Globus is Shanghai's undisputed Champagne specialist, stocking a carefully cultivated range of boutique Champagnes; the basement supermarket at Parkson has the best prices on, and the largest selection of, Veuve Clicquot and Moet & Chandon; prices at Carrefour, for everything else, aren't easy to beat; for expensive Taittinger and a few sparkling wines, order direct from wine distributor Torres (they sell to the public); for Freixenet, Bollinger, and a wide, wide selection of affordable sparkling wines, buy straight from ASC, China's largest wine distributor. On the other side of the river, there is city'super in the basement of the IFC mall. They stock loads of imported wines, several bubblies among them. For home delivery Yangjiu is a great option, with all of the big names like Krug, Laurent Perrier and Moet. If you prefer Aussie bubbly, Elders has a handful of selections as well.