Learn English – Single word for the quality of being waterproof — “waterproofness”, “waterproofity”, something else

List of adjectival and demonymic forms of place names

The following is a partial list of adjectival forms of place names in English and their demonymic equivalents, which denote the people or the inhabitants of these places.

The list can be found here on Wikipedia

Note: Many of these adjectivals and demonyms are not used in English as frequently as their counterparts in other languages. A common practice is to use a city's name as if it were an adjective, as in "Vienna Philharmonic Orchestra", "Melbourne suburbs", etc.

New York can also be used as an adjective without changing it's form.

A map of adjectival forms of place names

can be found here

A general term is hospitality worker. This broadly refers to someone who works in the hospitality industry, which also include, for instance, restaurants.