I'm happy that I marched Crossmen, it was a really fun experience. But just honestly speaking, I play my instrument really well and it wasn't anything I couldn't handle. But if you're looking to maybe get some experience, lower division corps like Revolution would be a great idea. Had I found out about drum corps when I was younger, I might have done that.
Although, it was really weird at first being 16, because I was one of the youngest people in the corps on a bus with college students. That's an experience that I don't know that I'd reccommend to every 16 year old, and don't think that every parent would be comfortable with. Heck, I honestly don't know why my own parents let me do it.