I am guessing that your six days include a weekend. In that case, do go to the chatuchak weekend market. And take loads of money along. 3 of us went and shopped for almost 20,000 baht. If you love shopping, its the place for you. Indra market is also good.
We were in Bangkok for 2 days only so could not see a lot. But try not to miss the Floating Market. Its one of a kind. I also loved the Grand Palace.
Since you did not mention the dates of your stay, the answer to your query is a little long. If ur stay includes a weekend, you should visit the chatuchak market.(Its open only on the weekends). Its mostly apparel, footwear. you must see the floating market and boa bay market . More than apparel,footware and purses ( available at a decent mall in any indian metro) better purchase would be the Electronic goods available at in Indira place. Bargaining is a must. A little attitude works.Also a little knowledge of common thai salutaions helps.( lots of brochures available at suvarnabhoomi airport). Pratunam is teeming with shops. MBK mall is worth a visit. so is their ocean park and madame tussads and the Wat Po monastery .Ayudhya is an hour's drive. Pattaya is only 2 hours away from bangkok and is a one day tour. You could also go to phuket.. If you are a non vegetarian must remember to taste the street food.
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