What is an ideal date for two friends that have known each other a long time?

So, I have a date. I will be going out with a long time friend. Usually on a first date I would take the person some place we can talk and get to know each other. Say, dinner, a movie, and some bowling or somethng. However the person I am going to be taking out is a long time friend, we could spend an hour in silence and still have a good time.

Here are some of my options:

- Fancy Dinner. (any time)

- Trip out to a giant cave with a lake inside where they play classical music concerts. (day or early evening)

- The casino (any time)

- Cocktail bar, cafee, night club. (night)

- Games arcade, bowling alley, movie. (30km travel, early evening or night)

- A walk (any time)

- A trip on a glass bottom boat (evening)

… Thats about all I can come up with. I’m sure there is more to do, but im comming up dry.