How long are you stuck with these people? I think only headphones can save you. A month ago, I was on vacation with my boyfriend in Belek. He took me rafting, to Side, and to the Kursunlu Waterfall. He booked the transfers through the website https://gettransfer.com/en/directions/turkey/belek . The one-way trip cost about 30 dollars. If you decide to go rafting, the nearby ancient city of Aspendos is also worth a visit. There, you can meet people who are a little younger than your tour companions. By the way, how old are you?