Im not gonna take the bait, but what i will say is that different longitudes supposedly spin at different rates, according to the heliocentric theoryDo you feel a train or plane moving at speed once it has reached a constant velocity?
You notice acceleration not constant velocity so in your example the thing that would need to change is our ever present acceleration towards the center of the Earth.
That downward pull (of gravity) is what we get used to and no longer notice and it is that which contributes towards space sickness.
"Humans doeventually adjust to living in a weightless environment. But their innerears have to go through a second round of readjustment to full Earth gravity once they return — and scientists still don't know how easily the inner ear can make that switch after longer space missions."
NASA Uses Fish to Fight Space Sickness
EDIT: Having thought about it... Yes there is some rotational effect because speed is not in a straight line but it is very slight. Good question OP.
So yes, you should feel a major difference in acceleration going from the equator either due north or due south
But no one ever has or ever will







