Sorry for the wait. Here's the kids' meal and cream soda.
Literal
Made-you-wait. Children's set [and-と] cream soda [copula-です].
お待たせしました is the standard server-to-customer line: 'sorry for the wait' (humble form). お子様セット 'kids' meal' — お子様 is the polite/honorific word for children. クリームソーダ is a classic Japanese kissaten (café) drink — soda with ice cream on top.