I would do ANYTHING to help my Dad!

In recent years, I have taken vacation days from work and have gone to Florida to:
-help my Dad set up new computers and transfer files
-been his HelpDesk when there have been technical difficulties (mainly user error)
-spent a week helping him get around and do his physical therapy after knee replacement

He has recently made another request of me. Though I am tired, taking on more work responsibilities, back in school, and want to save vacation days, I just don't think I can deny him this request. He called me the other day, and in order to maintain his platinum level status in his travel club, he must go to London......England, that is. He would like me to go with him.

*SIGH*

Once again, I will sacrifice for my father the way my parents sacrificed for me.