We had the guide, Nicole, to ourselves. Everyone else scheduled had cancelled because it was so cold. She was great with the locations we visited including a wealth of information about the locations and areas that we visited. It was extremely crowded in the city and she did a great job keeping out of the worst of the crowds. The tour was exactly as described.
Sean was our guide, really nice bloke, very knowledgeable about the subject matter. He took us round all the nice places and it was a really fun experience.
I would like to make a suggestion - rather than start with the Rockefeller Centre - I would end with it. The tour was nice, but nothing could surpass them afterwards. If you started at Macy's and worked your way towards them, I think it would work out much better. But its a minor thing - really nice experience.