There is one important thing to know and it's something I've been asked about. Travelers should educate themselves about the plight of captive elephants in Thailand. It is a sobering and complicated issue. Elephants in Surin Project are allowed off chains for at least 5 hours a day and mahouts are not allowed to use the bullhook. But the Project exists alongside elephants who are used for the local circus. These elephants are chained 24 hours a day (when they are not performing), sometimes by all four feet.
It's difficult emotionally at times to see them in these conditions but I remind myself (and tell prospective volunteers) that it's critical the Project continue to receive support from volunteers. It shows the local people that tourists want to see elephants treated humanely and interacting with each other in a natural environment. I have taken part in Surin Project every year for the last three years so there isn't anything I would have done differently.
I can say that on the first day of my first visit (in 2014) I sat on my bed, on the floor, in 100 degree heat, with only a fan and mosquito netting and thought 'what in the world have I just done!?! I can't survive this!' Fortunately, that feeling lasted less than 24 hours. Then I was hooked. But it was briefly terrifying!