Family Vacation

My family has not been on a vacation in atleast ten years. This coming March we are going on a cruise. None of us have done a cruise before nor have we been out of the country. I'd like to be able to repay my parents for all that they have ever done for me but I know I'll never come close. If I could raise even a little money to alleviate the financial stress of this trip, I believe it would make them so incredibly happy. Even enough for airfare. I just want to see them happy and be able to do something big for them. It is my moms dream to see crystal blue water on a beach with a cool breeze, and anything I can do to make the process of getting there any easier would be a HUGE blessing. Thanks in advance :)