I just have a simple question: Do you gain any reputation from the upvotes from the meta-site?
I've upvoted your question for you to verify this.
From the What is "meta"? How does it work? page:
Votes on meta do not affect your reputation; your meta reputation is the same as your reputation on Code Golf Stack Exchange (synchronized hourly), though you earn separate badges. You must have 1 reputation to participate on meta.