Bangkok insights
All traveling needs before visit Thailand

Location
Chatuchak Market is adjacent to the Kamphaengpetch Station (MRT) about 3 minute walk from Mochit Skytrain (BTS) Station.
Access by Train (best way)
Get off BTS skytrain at Mo Chit station and walk just 3 minutes. Or get off MRT (subway) at Kamphangphet station, not Suan Chatuchak station.
Market opening time
Wed – Thu (Plants & Flowers) 6.00 AM – 6.00 PM
Fri (Wholesale day) 6.00 AM – 6.00 PM
Sat – Sun (Miscellaneous) 6.00 AM – 6.00 PM
BEWARE
1. Smoking in Chatuchak Weekend Market is prohibited, fine 2,000 Baht. Smoke only at provided smoking area.
2. Beawre of pick pocketing.

MRT Kamphangphet station is at Chatuchak Weekend Market. Don't get off at Suan Chatuchak station unless you want to get 3 minutes walk.
This gigantic market has only a clock tower as a landmark. it may be helpful when you get lost.