Berlin is our first stop on a two week trip (Berlin, Munich, Salzburg, Venice) and my son'ts 15th birthday is the first night of our trip - Monday June 11th. We will be arriving in Berlin from the US about 3 pm and want to take him out to a fun dinner. He was not pleased about flying on his bday so we promised it would be a dinner he would enjoy. Since we will be tired we would like to stay relatively close to the hotel or easy public transport trip. We are staying at the Holiday Inn Express Alexanderplotz. We want it to be memorable, a fun bday celebration and a great way to kick off our germany vacation. Any suggestions or ideas?