I am going to Europe this summer (June-July) and I need to know some things to pack. I will be there for 20 days, visiting England, France, Liechtenstein, Austria, Germany, Switzerland, and Italy. I am only allowed to pack one suitcase and it cannot weigh more than 50 pounds. So, I need tips on how to pack pretty much your life in a 50 pound suitcase and I need a list of things to take with me. Thank you so much for your help!