So the first day of our vacation had started at noon with pizza and the BYU home game . We did n't want to drive all the way to California in the middle of the night so we stopped at Amy 's sister 's place in Vegas for the night and church the next day . We stayed after church for lunch before going on the rest of the way to California .

Select from:
- They have drank too much .;
- They have drank already .;
- They are hung over .;
- They are Mormon .;
Answer the following question: Why would the narrator not drink before the game ?
They are Mormon .