If your English (or Chinese) still needs work, that's fine. Nobody expects you to talk nonstop from minute one. Switch between languages, take your time, and jump in when you're ready. Listening counts too.
選一桌坐下 / Pick your table
中文桌:練中文,或幫別人練中文
English table:for practicing English, or helping others practice it
日本語テーブル:for Japanese learners and speakers
You don't have to stay at one table all night. Move around if you feel like it.