Organisers, led by Democrat MP Suthep Thuagsuban, finished erecting tents and installing rally facilities as well as mobilising a huge quantity of supplies on Wednesday night.
More than 8,000 protesters had already gathered at the site even though the rally doesn’t get underway until Thursday evening.
Meanwhile, traffic police on Thursday cited the anti-amnesty rally at Samsen train station as the reason for redirecting traffic on four roads.
Vehicles at the Sethsiri-Thoedthai intersection will not be allowed to access Kamphaeng Phet 5 Road.
The section of Sethsiri Road in front of the Democrat Party headquarters is closed as it has been designated as one of the rally sites.
Vehicles travelling through Kamphaeng Phet 5- Ranong 1 junction may only turn left.
Vehicles heading from Pradipat Road to Taharn Road will not be allowed to make a left or right turn.