转机酒店时的Reservation based on Flight Details和Reservation based on Check In & Ch

我有一个问题，请问预订樟宜机场转机酒店时的Reservation based on Flight Details和Reservation based on Check In & Check Out Time有什么不同？我应该如何选择。如果我选择了Reservation based on Check In & Check Out Time，但是我飞机误点了我该怎么办？那岂不是浪费了已经预订好的时间？因为转机酒店只能够住6个小时。