Just wanted to chime in from my experience.
We had a different experience with FLL. I thought it was very good, however my daughter hated it. She hated the constant repetition in the lessons. You are constantly repeating things like "A noun is the name of a person place thing or idea." The good news is that I don't think she'll ever forget what a noun is. The bad news was that everytime she saw the boy with the butterfly, she ran!!
Please take what I'm saying into perspective. Just like all curriculum, it's not for everyone. If you find that the repetition is annoying your child, back off a little. You may even want to take Charlotte's advice with poetry. You repeat the phrase / poem a few times over several days. Then let them listen and chime in once they know it. If I had it to do all over again, this is what I would do.
Hope this is a help and not a hinderance,