Good Day All -
Q - Would the following use of a possessive be acceptable. In this example, Cinco is the name of a restaurant.
Cinco's menu reflects a wide variety of options.
Q - Is it okay to add apostrophe S on the end of Cinco?
Yes, indeed, it certainly is correct to do so.
The Empire State Building's spire.
George Bush's Waterloo.
's works as the possessive of almost everything and everyone except Moses and Jesus.