Please rewrite this with fantastic English, good vocabulary?

I’m writing this to email my old English teacher.

Hi Sir, How are you? How has your holiday been? It was good to meet you when I turned up in the summer. Apparently the school has been shut due to the overwhelming flood in Bangkok.So now you’ve got ur holiday lengthened then. Good for you, isn’t it? I’m sure the whole country now struggles with this disaster. I hope things will get better as time flies by, with the water receding to the sea at some point. By the way, I was really impressed with seeing the pictures of me when I won the writing contest ages ago on your facebook.
I can’t remember anything in school at the time. I can’t even remember what I wrote. All the same, Thank you so much for reminding me of my past achievement.
I am on halfterm holidays this week. I haven’t been up to much other than drinking so much while camping in a camper van with my English friends around the English countryside of Suffolk. This is what Britons like to do apart from clubbing. haha. I have to crack on with a sheer amount of prep over the holidays now as I’ve got school next week.
Have a good one sir !