It makes me sad that you're supporting elephant riding! No elephant freely allows humans to ride them by nature, without having gone through "breaking of the spirit" (pajaan) ceremony. During the pajaan, elephants are abused both mentally and physically and are traumatised for life (google it). Also, their spines aren't meant to carry weight, especially not with those seats on it! You should do your research and find out what you are promoting and getting yourself into. Go to Elephant Nature Park (or one of their sister parks) instead where they let the elephants do as they wish and be free from tourist slavery! I really hope that you make more conscious decisions regarding animal welfare in the future!