Use {{location|TH}} to tag expeditions that took place in Thailand. It will add Category:Meetup in Thailand to the expedition.
Using ISO 3166-2 abbreviations, you may also tag the Changwat that the expedition took place in.
If the category link appears red, do not worry and create the category. Make sure that it is included in the appropriate parent category, for instance, Category:Meetup in Changwat Krabi is a subcategory of Category:Meetup in Thailand. The subcategories should be sorted in by their respective code.
Examples
{{location|TH}}: Thailand{{location|TH|81}}: Changwat Krabi{{location|TH|10}}: Krung Thep Maha Nakhon{{location|TH|S}}: Phatthaya
