Are tuk-tuks worth it?

Only for the experience, not as a primary mode of transport. They are almost always more expensive than a metered taxi or Grab bike.

Yes. While malls take cards, street food stalls, river boats, and small shops operate on a cash-only basis. Keep 1,000 THB in small denominations on you at all times.

Navigating Bangkok as a First-Time Visitor

Use a combination of the BTS Skytrain and MRT subway to avoid city-wide gridlock. For short distances or areas without rail access, use the Grab or Bolt apps to book motorbike taxis or cars to ensure transparent pricing.

Get an EasyPass for transit. Purchase a Rabbit Card at any BTS station. Load it with 300 THB to start; it covers most trains and can be used at various retail kiosks, saving you from waiting in ticket machine lines.
Master the river ferries. Use the Chao Phraya Express Boat (specifically the Orange Flag line) to move between riverside temples and the Grand Palace. It costs 16 THB per trip and keeps you off the jammed surface streets.
Use ride-hailing apps for safety. Download Grab or Bolt before arrival. Never hail a street taxi without asking them to 'use the meter' first; if they refuse, walk away and open your app instead.
Navigate the heat. Plan your outdoor walking for before 10:00 AM or after 5:00 PM. Use the elevated skywalks (connected to many BTS stations) to walk between malls and office buildings in air-conditioned comfort.

Are tuk-tuks worth it?: Only for the experience, not as a primary mode of transport. They are almost always more expensive than a metered taxi or Grab bike.
Do I need cash?: Yes. While malls take cards, street food stalls, river boats, and small shops operate on a cash-only basis. Keep 1,000 THB in small denominations on you at all times.