I think we can remove a few of the questions to make posting a bit simpler.
Perhaps we do not need the types of fuel delivered, types of membership and delivery. Membership and delivery need searching on the website which is not the purpose of a location based activity. It should be available to waymarkers who are not Costco members as you cannot enter without a membership card,
We can add some more detail in the description.
While it may be a fair comment that Costco are not in all countries, there are lots of categories which are commercial places in only a few locations worldwide, far less than Costco, There is a Costco in Iceland strangely enough.
Keep it simple is my motto.
Hope this helps to get it up and running.