I don't think whether the monarch remains Head of State or not would have much affect on our roads, stately homes, gardens etc etc though Bill. Or the beer and traditions etc. Bit of a red herring. Or even the palaces for the most part. The main palace in Scotland (ie Holyrood House) is a tourist attraction in its own right and would remain so were the monarch not Head of State. London is a massive world city and tourist attraction in its own right.