Transportation in Bangkok is reliable, inexpensive, and abundant. The most convenient form of transportation is via the BTS Skytrain and MRT Subway system, with fares starting at just $1. Taxis and tuk-tuks are also readily available, but make sure to double-check for metered taxis, especially in tourist spots to avoid overpaying.
If you have more time, be sure to check out Wat Phra Kaew and the Grand Palace; it is a must-visit with its stunning architecture and historical value. Also, try Yaowarat Road for a unique street food experience at night. For shorter trips, eliminate a few stops depending on your preferences. Keep in mind that most places close very early in the afternoon, so plan your visit accordingly. Lastly, it's best to bring some small change for public transportation and buy bottled water instead of tap water.