Don't forget I spend about 2 hr. just sitting/queuing for ferries, actual time spent in the Immigration office this year was 4 hrs. that's the longest ever, because my new passport reset my application time to January, full of Tourists getting extensions was a pain. Best time to do extensions IME is in the rainy season, June-August for me. Yes I know I could leave and start again, but at 73, I don't want that hassle.