Is the group tour on Ctrip reliable? Will you be cheated when you travel to Xiamen?

Ctrip said that when the room is full, it will change to a hotel of the same level, but hotels booked casually online can also be changed privately. The most wonderful thing is that after he sold it out, he didn't check whether there were any rooms in the hotel, so he said that we had improved the hotel standard for you. When we said that the hotel had a room, she said that we should know more about it. It's exactly the same as ordinary small travel agencies. You don't have your own responsibilities, and you haven't joined the group yet. It's just that the hotel makes you very unhappy. There are self-operated brands, but there is no self-operated responsibility.