Just wanted to share my experience at MTT today.
I had to extend the tourist visa 30 days. I booked the time online. Got to the building. Went up with the elevator to third floor. (You have to look for counter K). A long hallway ends with a desk. Since I pre-filled the TM7 from the internet, and already had all the photocopies (make sure you sign, and date each copy) and 6x4 pic, I immediately got the documents checked, got a number and went in to the big hall and sit down. The chairs closer to the entrance are for those who are waiting to submit the documents and passport. When my time came, a lady called me up, very polite and professional. She checked everything took a photo of me, and gave one of the numbers back and told me to wait on the other side of the chairs to get the stamped passport back.
After about 5 minutes another lady called my number and gave me my stamped passport back with the new visa extension together with an invoice.
All this took 10 minutes total. I strongly suggest to book online, as when I was leaving, the hallway was full of people waiting for their number to be given.
Very well organized, and efficient. Your mileage may vary 🙂
And guys, thanks for the help here!