Bummer! (Though I'm not sure I needed that thorough of a description). Hope you're doing better. As one who spent 5 days in the hospital for Vertigo, I empathize.
My Thailand recommendation would be cooking classes!! I spent one week in Chiang Mai taking cooking classes. Yummy, yummy. ANd I continue to impress my friends back home with my Pad Thai and other dishes. I took classes at the Chiang Mai Thai Cookery School, 1-3 Moon Muang Road if you get up that way.
I did cooking classes across Asia - Thailand, Vietnam & China - and loved it. Techniques I learned continue to influence my cooking.