Roller coaster

Today I went to the theme park with my club members. It is Mitsui Green Land. There were not only our club but also many clubs. So there were more than 200 people. On the stage, each club's presidents played games. In the afternoon we rode some roller coasters. I like to ride it and my friends, too. But a friend of mine don't like it. We didn't know it and rode it together. Few hours later, he became quiet. Then we noticed at last. He seemed that he wanted to go around with us. I owe him an apology. But we enjoyed to around this members.