Once these people are out of college and in the working world, they may very well want more to their lives than just their day job. As parents, we need to remember that we know working engineers who participate in community theater or play in a local jazz band or coordinate things for a drum and bugle corps or sing in a church choir. We need to trust that college admissions teams know people like that as well.
Serious interest in engineering and in theater? Have the kid check out the Entertainment Engineering program at U NV Las Vegas.