Remember the Royal Family is a construct. The Hanoverians were not the most popular royals. When the middle classes became more powerful Victoria, led by Albert, set out to seduce them by creating an image that would appeal to that section of society. This continued into the 20th Century when they realised that they now had to appeal to the working classes so the Prince of Wales (later Edward VIII) was sent out to seduce them. Suddenly royals were seen meeting miners, dockers, mill workers (especially selected of course) and people lined the streets to see them. This was when the walk about started. The people could stand behind barriers and see the royal who passed by waving and smiling. Today we have a royal family that is adept at using the media to maintain it's popularity. The younger royals have grown up in the media age and know how to smile and give sound bites. They have media and PR advisors who tell them when to release pictures of the children, when to release pictures of the 'happy couples' and feed stories into the media.