Have anything changed recently about these rules ?
I plan my second border by land, this year on December 1, then Fly out end of December to Hanoi, then Fly in with visa from Vientiane January 10, that should give me time until April 1, correct ?
TLDR : Answer Summary
Recent discussions indicate that the rules for obtaining a Tourist Visa in Vientiane and other Thai consulates have changed, particularly affecting those who have spent considerable time in Thailand. Travelers planning a second border run and visa application in Vientiane may face difficulties in getting a tourist visa, especially if they have been in Thailand for an extended period. It is suggested that entering Thailand by land after a trip to Vientiane may be less risky than flying back in, as the land border entries have different regulations. Additionally, the current immigration policies are stricter and could impact the ability to obtain visas, making it essential to understand the limits on visa exemptions and available extensions.