Re: Royal Baby
According to the UK Association of Leading Visitor Attractions, none of the occupied royal residences made it into the top 15 UK tourist destinations in 2012. At a meager 613,000 visits Buckingham Palace didn't even make the top 40. The top 5 attractions last year were all museums and galleries in London - the most popular being The British Museum with around 5.6 million visitors.
I'm sure some of our younger, prettier royals will help to sell the odd copy of Hello magazine now and then but I've never heard any substantial evidence to suggest that tourism in the UK would collapse or even suffer particularly badly if it became a republic.