Two quick visa(free) questions:
1. Arriving visa-free with the initial 30 days, is it indeed possible to add another 30 days at an immigration office (e.g. in Chiang Mai)?
2. If then exiting to Laos or Cambodia for a bit, is it possible to return with another 15 days crossing overland?
Trying to figure out if it's worth getting the 60 day (90 extendible in-country) tourist visa or if visa-free would suffice.
Information online is all over the place about this and everything else Thai visa related.