If you really want to get your technique right, its definitely a good idea to get as many private lessons as you can.
Where else in the world are you going to pay around $16 USD for a one hour session with ex-champions of Thailand?
Basically you need to approach whichever instructor you want to train with and ask them when they are free for a private. You pay for a coupon at reception, and give the instructor the coupon after the lesson. costs 600 Baht if you buy each lesson separately, however you can buy a bunch of lessons in advance and get a discount.
I did a private every morning and felt a massive improvement to my technique. Don't be stingy. You are there to perfect your Muay Thai so dish out a little extra for those private lessons. They are invaluable and a lot of fun as well.
You can ask your trainer to work on specific clinching, kicks and punches, or just enjoy an hour of pad work or light sparring. All the trainers I worked with were super friendly and they each had different things to show me.
In summary, don't just go to the group sessions. Even if you are on a tight budget, get some privates and work on your basic technique so that the group sessions will be even more worthwhile.
I worked a lot with Nai. Always smiling, very friendly and knows his shit.
