You could just take a local boat from the pier. It'd be a great way to view the city. I don't think you'd need to book a speed boat prior but I'm not 100% sure

Tiene varias paradas dependiendo la ruta que escojas Te informan cuando compras los billetes Al lado del hotel sangri la hay paradas de muchisimos tipos de barcos y sus oficinas de venta de tickets en internet tambien puedes ver los recorridos

Chao Phraya Dinner Cruise with Private Transportation by Travstore Travel Management. Set out onto the Chao Phraya River for a romantic evening that takes you past the wonders of ancient and modern Thailand. This cruise lets you dine on exquisite Thai and international cuisine and enjoy the soothing sounds of saxophone and violin as you glide past the glittering temples of Bangkok. A private, air-conditioned vehicle carries you from your hotel to the banks of the Chao Phraya, the great river that flows through the center of the city. There, you board the elegant cruise ship, relax with a welcome drink, and settle in for the voyage to see the sights illuminated at night. Check out spectacular landmarks like the temple of Wat Arun, with its towering stupa-like pagoda, and the golden spires of the Grand Palace.

Devi fare un tour con la cena, basta rivolgersi alle agenzie che stanno direttamente ai pirti di attacco. Ce ne sono molti.

Dinner Cruise on the Chao Phraya River costs around 990 THB. You can book online or through your Travel agent, at the Hotel where you are going to stay. It may increase to around 1200 THB when they arrange to pick from the hotel and drop you back after the dinner cruise is over. It is a wonderful experience to have the dinner cruise.

Both local and tourist boats are not friendly strollers. You may go for a private boat so that you have sufficient time to hop on and off the boat.

Your hotel should be able to book this for you, alternatively you can book this from one of the tour offices located just before you turn onto Khoasan Road. Make sure you use a tour office rather than from one of the many stands selling tour tickets nearby.