R. Karo stayed up all night and was studying with his student R. Shlomo Alkabtz (author of Lecha Dodi) and the following occurred:
Rav Yosef Karo and I agreed to stay up all night on Shavuot… we did not sleep for one minute… and when we began to study the Mishna.. we heard the voice of the Divine Presence, [with a feeble voice] speaking through Yosef Karo: ‘May you be blessed; return to your studies, do not stop for one minute, and go to Eretz Yisrael… Do not have pity on your vessels [material goods], because you will be sustained by “the upper realms”… so hurry to Eretz Yisrael, because I will be your sustainer, and I will provide for you and the peace of your house.’ And we all raised up a great cry of joy, when we heard the Divine Presence, her voice pleading with us…
Thus, feel the Divine and give Him honor… and God will cause your hearts to merit becoming one with the Holy Land, to work it together, Amen.
Well, I must admit my experience was not QUITE like that. Still, I second the motion regarding moving to EY!