Hi all, how are you?, don't worry about me, I'm fine

.But I have these questions about adjective:
1) shoppers eager for bargain.
if eager is the adjective , where is the verb?.Why we removed it?
2) The same thing here, plus is it right to write a sentence without the verb:
pick the fruit when ripe.
3) This is easy I guess, giving the adjectives order,
A long, empty stadium.
why not,
A long, and empty stadium.