People keep telling me that a tourist visa is not valid for visiting family, and I should obtain "the correct visa", but it's now listed under reasons for a tourist visa (e-visa website, UK).
TLDR : Answer Summary
There is some confusion regarding the validity of a tourist visa for visiting family in Thailand. While the e-visa website lists visiting family as a reason for obtaining a tourist visa, it's important to note that if your visit exceeds 60 days, you may need to apply for a Non-Immigrant O visa instead. This requires providing evidence for your stay, such as marriage or family connections.