How to calculate the cost of junior high school students going to Yan' an research base for tourist attractions?

By the day. The expenses for junior high school students to visit the scenic spots in Yan 'an Research Base are generally calculated on a daily basis, and the daily expenses also include the transportation and accommodation expenses of the day. When the school charges, parents can consult the school about the charging items and terms, so that they can clearly understand the contents of the charges.