12月24到1月9号游玩意大利瑞士两国求建议及征同

大概计划去如下链接说示的几个城市，24号中午到米兰，9号早上走。因为第一次欧洲游，所以在此诚恳征求各位前辈建议怎样才能最佳的安排路线和时间。多谢！！另外听说意大利车票不是很贵，有必要提前网上订票或是购买Italy pasm吗? 购买swiss pass需要在网上提前预定吗?还是到当地tourist infomation处购买即可？不同时间车票价格会不会不一样？谢谢！！


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