Vacation to the Philippines

For those living abroad for a long time, how often do you take vacations to the Philippines? I have a lot of relatives who are now American citizens and I know for a fact that they want to take vacations to their country of birth often but it is the expense that is hindering that desire. In fact, my 3 siblings are legal US residents since 10 years ago and only 1 have my brother taken a vacation here early this year but my 2 sisters have never been here yet for a vacation.