In actual it was not as interesting as you may read from article in Internet. It abit disappointed when I found the boat price were so expensive which cost us 500baht per person. We departed from Bangkok about 7am reached there about 8:30am. Took a boat to floating market. We expect there are crowded with hundrreds of vendors and purchasers floating in their small rowing boats selling and buying or exchanging their goods, unfortunately, we saw more tourist boats.
The floating market at Damnoen Saduak is quite interesting! You gotta get there early though. You can rent a boat for an hour or two and get paddled around. There are some areas that local people come to buy their fruits and vegetables and there are a few stands that are targeting the tourist with the tourist junk! But it is worth the visit! Bring plenty of film or have plenty of MB's on your digital card!
You will have to get up early if you want to leave from Bangkok as it will be about a 2 hour bus ride. Or you could stay the night in Damnoen Saduak.