It's very possible! On a 12-month extension you need to report three times, but you can only be fined once. I know people who do it. They reckon it's cheaper than the taxi/train fares to immigration!
It's no big deal for immigration. They're more concerned with overstays. The 47 and 30 are just administrative processes which get them extra dosh in fines
I can't access that, but I can only assume if a person is arrested for some other offence and hasn't notified, the fine increases. Trust me, you are not arrested for not filing a 90-day report. I know several people who can't be bothered with the process and simply pay the 2000 baht for THREE missed notifications when they go for visa extension
Not in Thailand. Bangkok is the city that never sleeps. Great international restaurants, imported beer easy to get, great expat pubs showing sports, fabulous western live music, great transport network. It's a playground. I couldn't live anywhere else!