Starbucks has tens of thousands of branch locations across the world. There is no single Starbucks store.
At any Starbucks store.
Yes, at Micro Mall
Yes, there are some starbucks in Chicago.
Contact the Guam Branch office: 143 Jehovah St, Barrigada, GU 96913.
Yes there are many catering in Guam
Yes, actually, some Starbucks stores do sell espresso makers! Much of this really depends upon which branch or location you happen to be at! Otherwise, Starbucks, as a brand, sells many caffiene-related products!
Guam doesn't have any Walmart's only Kmart.
You don't need any lights in Guam!
One can purchase a Starbucks gift certificate from any local Starbucks branches. They are all offered at a different range of price, depending on the value of the Starbucks gift certificates. Apparently, eBay also sell the Starbucks gift certificates.
the closest mainland near Guam would be Thailand if that's what you mean
While Starbucks does not have any stores in Rwanda, the company does purchase a large part of its coffee from that country.