So if i became an astronaut and i was sent up to the space station orbiting the earth.
What would the earth look like and why wouldn't I see the edge of the earth?
And why aren't the chinese frightened of going east, same goes for the americans going west?
And why is it i can get a boat from alaska to russia without going around/through the two american continents?
To answer your questions:
1. If you did, you'd see exactly what you'd expect to see: A round Earth. However, because FET says there's a spolight sun that exactly simulates a RE solar system but really isn't, what you'd see would be the lit "area". And no, you couldn't see the night side and the city lights. Why? Dunno. Probably something to do with the intensity of light from the lit area making it impossible to see the night side even if you cover up the light area with your hand or something.
2. FET states that every time we go in any direction, we follow some path: magnetic field, stars, ect... and FET states that all these things curve. Basically, instead of saying the Earth is curved, they say everything else is curved.
3. Same answer as above.
See, FET takes the observations that would naturally happen with a Round Earth and explains them in such a way as to make it work in a flat Earth. Some of these are very, very, very hard to do like star movements or timezones or what-not. However, anyone with imagination can make up a story. To date, no one has ever managed to produce actual, verifiable data that contradicts the Round Earth.
But this doesn't stop someone from believing they're right and everyone else is ignorant/can't see the pattern/is brainwashed.