In Silom, the Brasserie at Holiday Inn opens at 12:00 for a lunch before joining in, followed by Chocolab's chocolate tea at 14:30 and Soshi's Japanese buffet at 18:00. The two North Sathorn picks share SO/ Bangkok, so afternoon and evening connect without travelling.
Around Siam Square the malls act as shelter. Ventisi serves a buffet from 12:00 and JUMBO Seafood Siam Paragon gives a two-hour indoor meal. After dark, Red Sky Rooftop Bar offers a beer and cocktail package to unwind.
The old town toward Khao San is built around the river. Chom Arun opens at 11:00 for an early lunch and the Sala Rattanakosin Eatery & Bar stays open to 22:30 for a late dinner. Both face Wat Arun.
For the midday water-fight hours slot in somewhere cold, such as Chocolab at 14:30 or the Brasserie with soft drinks included. April passes 35 degrees by day, so plan water breaks between meals too.
Before booking, check Songkran surcharges, non-refundable prepayment, the late-table rule and no-show handling on each listing. Hours and menus may change with the restaurant's circumstances.