Just don't turn up for flight, no worries, they simply leave without you, happens every single day, though it would be nice to cancel your flight, your Visa is up to date, so no worries at all.
Why anyone would even think of bringing that amount of money in cash into Thailand is beyond me, my mind boggles at times, bank transfers is so easy, and not expensive at all, but each to their own I suppose.
Totally agree with Julien, seriously 120k a month, can rent a 3 bedroom villa private swimming pool, maid, the lot, that is 1 hell of a budget. Think again.
Any experts on here???? Are you joking, its full of experts on here, every single one of them, not just this topic either, every single topic you care to mention, all experts.