Not that I'm aware of
No, Costco does not offer day or guest passes. You are allowed to go walk around the store without a membership, but you cannot buy anything (except alcohol or the food court - you don't need a membership for that). Costco will also refund you 100% of your membership if you are not satisfied. You could buy a membership, try it out, then get a refund if you don't like it.
Yes, just ask at the membership desk. Costco allows a visit though you may not be able to buy or buy only a limited amount. If you have a family and/or a house, or buying as a group the membership is worth the cost! A membership allow your spouse for free. Other adult members of your family can be enrolled for a small fee. Check it out!
Im not quite sure.
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