@Ellie ******
thank you Ellie, if I don't make it back in time for my year extension stamp on 19th August (if a flight gets delayed or cancelled, for example) then have to enter on 30 day waiver, does Chiang Mai immigration let me apply again right away for a yearly Family (Spouse) extension if I immediately get bank letter, photos etc. right away and apply within those 30 days? No penalties for missing the first stamp other than losing that 1900 baht?