It is perfectly OK to wear jeans (jeans imported from Japan) whether imported from Japan, such as buffets, but in the restaurants of specialty restaurants, the Ma department may send you back to your room to change clothes. Even if they are your best clothes, pair it with a blazer or cat-like silk top and it doesn't matter in shiny leather gown shoes or heels. You also wear jeans. For men, the ideal outfit is polo or button-up shirt and slack pants for women, wearing clothes, dresses or trousers with dresses. Dress up like you have dinner at the city's most exotic restaurant.