The tiny tiny tiny scroll of truth

QUEEN ELIZABETH COULDN'T SIT ON THE IRON THRONE OF GAME OF THRONES WHEN SHE VISITED THE CAST OF THE POPULAR SHOW. THIS APPARENTLY IS BECAUSE THE MONARCH IS NOT ALLOWED TO SIT ON ANY FOREIGN THRONE, EVEN IF IT HAPPENS TO BE A FICTIONAL THRONE LIKE THAT OF GAME OF THRONES. I HOPE YOU BROUGHT A MAGNIFYING GLASS WITH YOU