Here is my powerpoint and worksheet for Lesson 7 teaching opening hours, admission etc. The worksheet forces the students to use English, but it is necessary to coax the students into speaking with each other. Justin Bieber helps the girls learn. They like him.
To really hammer home what admission is, you can flash some won, or in my case some Monopoly money. These are both satisfactory tools to teach this lesson. The real meat of the lesson is at the end when either by themselves (for advanced classes) or in pairs they are to think of their own location (museum, zoo, aquarium, amusement park etc.) and make a poster including the opening hours, the days it is open and the admission. In the next class, they can finish the posters (on 8.5' by 11' construction paper) and then you have the students circulate the class pretending they want to go to each place and using the key phrases they have learned.
I hope this is useful to someone or they can turn both into something better.