Translation of táctica

If someone tells me to try a delicacy I won't eat it although I have never tried it. It took me twenty year to try Sushi and yes I love it. My friends tell me that I am conservative and stubborn.
The place I have been to is famous for its many language schools. People come from all over the world to learn Spanish and practise their language skills. I guess there are more than two hundred schools there.
In order to get to this hidden lake one would have to row beneath a cave. On the other side of the cave the five of us were alone. The lake was surrounded by limestone mountains covered with tropical trees.