No that wouldn’t make any difference..
During the war her father refused to move from Buckingham Palace as he felt it would add to the anxiety of his people..
the whole family stayed in Lo0ndon amongst the bombing..he felt that by staying he could inspire and succor the English population and lead his subjects to victory over the Germans...
My mother used to talk about how brave they all were..
That was then, during a war, a real war, where everyone in London was in danger. No way in hell her current bodyguards would let her go somewhere if they actually thought there was a decent chance of a bombing. Their bravery during WW2 served a purpose. Her murder by terrorists today would be a tragic disaster, to be avoided at all costs, the 70th anniversary of V-J day is not so important to anyone that they would genuinely risk the life of the Queen.