I liked it a lot; it was fun and the songs were great. BUT, no one can deny that it matches the story beats and song-placement of the original to the point where it's kinda weird. ESPECIALLY having a not-necessary musical scene with Meryll Streep standing in for the not-necessary musical scene with Ed Wynn. And the Lamplighter dance was not nearly as good as Step in Time-- Not even close. Also, the climactic race to Big Ben was pretty stupid, considering Mary Poppins could have just flown up there any time she wanted.
But, yeah, I loved it anyway. The animated sequence was gold. And, in the new movie's defense, all the Poppins books are pretty much carbon copies of each other as far as structure, yet are all entertaining.