Having a wonderful time. Wish you were here.

Having a wonderful time. Wish you were here.

A clichéd message typically written on postcards or similar correspondence by someone who is on vacation. All she wrote on her latest postcard was, "Having a wonderful time; wish you were here!" So I guess her trip is going well.
See also: Have, wish, wonderful
Farlex Dictionary of Idioms.

(I'm) having a wonderful time; wish you were here.

Cliché a catchphrase that is thought to be written onto postcards by people who are away on vacation. John wrote on all his cards, "Having a wonderful time; wish you were here." And he really meant it too. "I'm having a wonderful time; wish you were here," said Tom, speaking on the phone to Mary, suddenly feeling very insincere.
See also: have, here, wish, wonderful
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • having a wonderful time; wish you were here
  • wonderful
  • read it and weep
  • read 'em and weep
  • not in my back yard
  • Not in my backyard!
  • oat opera
  • oater
  • opera
  • horse opera