I figure since they have a flight in Yokohama on Saturday, she'll be drinking a bit after that?
Apparently, Morishi eats fries every day. If she didn't get the answers correct, they were saying as a punishment, she couldn't eat fries for a month/year. She was practically giving a clinic on how the fries taste different at different fast food places.
If I remember correctly, the next one will have: Aipon, Sakoti, Nachu, and Makocchan on November 28th or something like that.