So my wife and I will be there mid May for 6 days. First time in Prague and will be staying at a hotel right near the Astronomical clock. Any tips for the days we are there? Is it worthwhile to even visit another country? I know about the pickpockets and some of the tourist traps (taxi, money exchange, souvenir shops, etc). What are the "must sees" and things to do for the short time we are there?