They are going to start and end with salsa, so my guess is they'll end with either Letita or John (helping them stay safe) and begin with Kate. Has Kate opened the show yet? I think order they dance in is really important in the judges' marks and the votes. First is bad, second is worse, which I reckon will be Gethin or Matt. Matt will be fine regardless, but I worry for Gethin.
I'm thinking too much about this! I'm going to bed.