The camp includes flag football, mariachi music, chances to watch the players practice and even get a few autographs.
Drake Caudillo says he and his family have been following the Rams since the team relocated to Los Angeles in 2016.
"We're going strong and it's a family thing," he said.
His son Jakob is enthusiastic about the team - but he's not exactly sure why!
"I have no idea why I'm a Rams fan," Jakob Caudillo said. "I just all of a sudden said, hey I like the Rams!"
Rams open practice sessions at LMU continue through Saturday.