Be aware the FS700 does not have shutter speeds/angles that allow 24p in 50 Hz countries without practical lights flickering.
I bet I've read about two dozen papers on flicker and hz, understand the process of 60hz to 50hz, but in real life, it doesn't seem to always work out like a white paper.
In a modern U.S. city 180 degrees works for 60hz, but in an older city it can get wavy on streets.
What gives us fits is some place like Hong Kong where there are LED's and Plasma screens blasting everywhere, along with Neon. It's just a flicker nightmare, though one shoot on Rue Hauseman in Paris, shooting with the RED 1, it took forever to find a setting where the street lights didn't wave up and down the street.
Maybe it helps (or hurts) that I usually always shoot at 29.97 or 30p, rarely 24p.
I think 24p is just an old standard that was devised to save film stock and when editing at 24p graphics in most non linear systems tend to stutter or strobe if they go horizontal across a frame, where at 30 p they're smooth.
This is just conjecture, but New York seems difficult because it's an old city and the power grid seems stretched, especially in the summer.
I really think Sony, with it's history in Video and not film, have this thing where they'd really be happy if everyone shot at 30 or 60I, though I think there is a lot more going on under the hood than we know, with these electronic shutters and in camera processing.
With the REDs even at 125th of a second it seems smooth, with the FS100 125th of a second seems even smoother, so somebody is processing different, I haven't shot an Arri with a mechanical shutter, though I bet they would look more frenetic at 125th.