Last week,I went to Costco which is located in Makuhari, Chiba. Costco is a member ship warehouse club of America.
Costco provides many kinds of goods for customer. In the world, they have 627 shops now like America, Canada, England, Taiwan, Korea, Japan, Australia and Mexico. America has 449 shops now. Japan has 15 shops. The number of memberships is 674,000 people.
Why Costco is popular in the world? I think they have a good quality service and advantage. The advantage of Costco is open all the year round, member cards are usable in the Costco of the world and returning goods is possible.
I recommend you to go there. I think sharing foods with friends is good idea because all size is American size.