For travel, dinner and views handled in one family booking, start with Chao Phraya Princess Sunset/Dinner Cruise. Dinner and riverside night views come together on board, cutting transfer hassle on countdown night, with a good chance of catching fireworks over the river around midnight.
For a more formal evening, compare Horizon Dinner Cruise by Shangri-La Hotel Bangkok and The Opulence Dinner Cruise. One is run directly by the Shangri-La hotel and the other is a comparatively newer vessel, with different seat tiers and menus to match your group size and budget.
To combine skyline views with dinner from height, look at Buffet at Baiyoke Sky by Baiyoke Sky Hotel. Dining at a high-rise observation level lets you take in the city skyline above the street-level crowds while still catching the countdown atmosphere.
To keep dinner close to a Sukhumvit stay, compare Goji Kitchen & Bar at Bangkok Marriott Marquis Queen's Park. This Queen's Park-area buffet is useful for a family dinner without much travel on countdown night.
For a Wat Arun view over dinner, consider The Deck Restaurant by Arun Residence. Its riverside seating sits close to the riverside countdown district, so tables here tend to sell out earlier than most during this holiday — book several weeks ahead.
For view dining at rooftop level, compare Buffet at Red Oven Restaurant by SO/ Bangkok. Its higher-floor open kitchen suits couples or friends who want a skyline view while taking in the countdown mood.
For comfortable seating with older parents and a riverside view, look at Next 2 Cafe at Shangri-La Hotel Bangkok. This riverside hotel buffet keeps transfers short and seating comfortable for a family New Year dinner.
Before booking, confirm the seat tier (window, open deck, private room and similar), minimum group size and dress code, and the rain policy for cruises. December 31 evening seats sell out earlier than almost anything else in Bangkok dining, so booking weeks ahead is close to essential. This does not mean any specific menu or seat is tied to an official countdown event — use the current product details as the final reference.