They will probably ask you about any previous experience, why you want to work at Alton Towers Hotel, and possibly what skills you can bring to the job. They could give you an example scenario where you have to explain what you would do in a certain situation (e.g. a customer complains about their meal and is doing so in a loud and aggressive manner. What steps would you take to calm the customer down and deal with their complaint?)
As for the contract Merlin typically run seasonal contracts and 10th November is when Alton's season ends. This does not mean that there will not be an opportunity for them to take you on a new contract either at Christmas, or next season.
Hope that helps