But as the chairmanship of the Asean passed Thursday from Singapore to Thailand, Bangkok is hoping unrest will not spoil its year in the spotlight.
The annual Asean summit has become a major stop on the diplomatic circuit, even drawing leaders from the US, China, Japan and Russia.
Thailand's chairmanship means Asean will be hosted by a military dictatorship the same year it plans to hold elections.
The kingdom is notorious for its fractious, disruptive and sometimes violent street politics.
Thailand's generals will be desperate to avoid a repeat of 2009 when protesters from the pro-democracy "red shirt" faction smashed their way into the summit venue in the resort city of Pattaya demanding elections.
Pandemonium ensued, with a number of leaders having to be rescued from a hotel roof by Thai army helicopters while others fled by boat.
"It was chaotic," one Southeast Asian diplomat who attended that cancelled summit told AFP.
Back then Thailand was riven by political tensions that pitted the "red shirts" -- loyal to ousted Prime Minister Thaksin Shinawatra -- against their "yellow shirt" rivals, allies of the royalist and military elite in Bangkok.
In 2014 an ultra-royalist military clique again seized power, ushering in the most autocratic government Thailand has seen for a generation.
Junta chief Prayut Chan-O-Cha risks lifting the lid on Thailand's political pressure cooker with elections slated for some time early next year.
That could usher in a return of Thailand's traditional rambunctious party politics.
But Busadee Santipitaks, a spokeswoman at Thailand's Ministry of Foreign Affairs, said the country was ready to host world leaders regardless of the elections.
"We expect to host more than 170 meetings at various levels next year in Thailand," she told AFP, adding "tentative dates" for the key summits were under discussion.
A second Southeast Asian diplomat said the Thai government is unlikely to let a repeat of the 2009 debacle occur.
"I don't think they will allow another such incident to mar their chairmanship," the diplomat told AFP.
Historically Asean tries to avoid hosting summits in countries the same year they hold elections.
Thitinan Pongsudhirak, a veteran politics commentator, said the 2009 debacle was a "fiasco, the lowest point in respected and recognized Thai diplomatic annals."
He said while political unrest could never be ruled out in Thailand, the junta could make their ASEAN hosting duties easier if they deliver a clean and timely election.
"The junta has to ensure that the overall electorate is satisfied with the electoral process and timing," he told AFP.
"If the junta manipulates at all costs to stay in power after the poll, it could elicit a popular backlash."