We took our 3.5 year old and 8 months old kids to Bangkok. We took them to Siam Paragon for food/shopping, the Siam Paragon Ocean World (Basement of Siam Paragon), joined a local tour with english speaking tour guide and visited the elephant show, crocodile show, and thai culture dance. We have also hired a van with driver and tour guide for 10 hours and it made our lives so much easier. Just need to aware traffic in Bangkok is quite bad.