You could eject in the X-Wing video games (and nothing, nothing is more canon than the X-Wing games :0) ), and it played this cutscene:-
The Empire, naturally, doesn't care enough about its pilots to run an effective S&R operation. Although Rebels will generally rescue any surviving Imperial pilots they come across.
Yep. They'd just need to seal up their suit before they eject. The Battlestar Galactica reimagining even had an episode where Apollo had to eject from his Viper, and he spent the entire episode floating in space (with a leaky suit) before he was picked up.