请教一下意大利、瑞士18天行程这样安排合不合理

2015/07/10 (Fri)
Chengdu->Milan

2015/07/11 (Sat)
Milan

2015/07/12 (Sun)
Milan->Interlaken

2015/07/13 (Mon)
Interlaken

2015/07/14 (Tue)
Interlaken->Lucerne

2015/07/15 (Wed)
Lucerne

2015/07/16 (Thu)
Lucerne->Venice

2015/07/17 (Fri)
Venice

2015/07/18 (Sat)
Venice->Bologna->Modena->Bologna

2015/07/19 (Sun)
Bologna->Florence

2015/07/20 (Mon)
Florence->Pisa->Florence

2015/07/21 (Tue)
Cinque terre->Florence

2015/07/22 (Wed)
Florence->Siena->Florence

2015/07/23 (Thu)
Florence->San gimignano->Rome

2015/07/24 (Fri)
Rome->Vatican

2015/07/25 (Sat)
Rome

2015/07/26 (Sun)
Rome

2015/07/27 (Mon)
Rome->Chengdu