YES, they are all correct, it depends on what kind of payment, but you can.
Only payment you can make is for your Costco membership.. Every Costco purchase must be paid out full.. You could use only Visa credit card.. Or any debit card.. Checks are Accept it if you are the primary cardholder... means The costco membership must be on your name...ok
Yes
Yes, you sure can, at their customer service desk. They have a cashier there too, for charging and refunding money, etc.
Yes get a Master card
Yes at members service
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