To calculate the total revenue generated by the birthday party, we first need to determine the cost of the items purchased. In this scenario, each of the 12 kids buys a box of candy and a soda. Assuming a box of candy costs $5 and a soda costs $3, we can calculate the total cost as follows: 12 boxes of candy at $5 each equals $60, and 12 sodas at $3 each equals $36. Adding these two amounts together gives us a total of $96. Therefore, the movie theater will make $96 from the birthday party's purchases.