Hi GradCafe, I've got a waitlist dilemma. School A has accepted me, and offered me a very generous fellowship. School B is probably a better fit for me, and is currently my first choice, but I am still on their waitlist (though my potential PI said I'm at the top). School A says they will rescind their fellowship offer if I do not accept soon (i.e. next few days) so they can offer it to someone else.
Is it fair to ask school A to wait until I get a decision from school B? School B hasn't given me a firm timeline, and I would be crushed to lose A's fellowship opportunity, but at the same time I do feel like I could be happier at school B.