> Per your definition, anyone who desires a vacation to a tropical island is greedy. Or eating at restaurants.

It isn't my definition, it's Merriam-Webster dictionary, and I suggest reading the definition more carefully, it really isn't that hard to understand. That is how the word is used.

All of your examples are not selfish or excessive. So not greedy. That it isn't a clear bright line isn't a problem, most judgements in life are not clear cut.