improve the consistency of the following text.
The Belcher kids have been invited to Rudy's birthday party in the park. Once kids get there, kids find out that there was a mix-up and Rudy doesn't have a bounce house.
The Belcher kids have been invited to Rudy's birthday party in the park. However, once they get there, they find out that there was a mix-up and Rudy doesn't have a bounce house.