There are lots of night markets in Bangkok where you can enjoy street food and shopping.
I'll also introduce some night markets in Pattaya as extra info.
Please check the locations using the Google Maps links.
JODD FAIRS Ratchada:
https://maps.app.goo.gl/eDJsNUq1RAJVWDSV8
Yaowarat China Town Night Market:
https://maps.app.goo.gl/m5KMNud4ZrXwMqyt8
Chatuchak Night Market:
https://maps.app.goo.gl/CHiUkZSpqDMmDXj29
Pattaya Chang Beach Party Night Market:
https://maps.app.goo.gl/zGbzdHwBahM2nLxt8
00:00 JODD FAIRS Ratchada
23:57 Yaowarat ChinaTown
02:16:48 Chatuchak Market
02:55:07 Pattaya beach & Chang Beach Party