One Last Trip

I am hoping to help raise some money to send my parents on one last trip.  This past year has been a terrible one for them.  My mom found out she had uterine cancer, and then 2 months later found out she had breast cancer.  The day they were supposed to leave on their last vacation, my father was whisked away to the hospital for immediate brain surgery which made the discovery of his stage 4 brain cancer...and that was a week and a half before my mom's breast cancer surgery.  Both had recovery together, both went day after day, week after week to radiation treatments (which included chemo for my father as well).  My mother is expected to make a full recovery, my father not so much.  Even after chemo and radiation, his tumors haven't shrunk. His doctor has suggested they take one last trip together. With all the medical bills piling up, I thought I try this to try to send them someplace nice.  The where should be up to them.  My dad has always wanted to see Alaska...but they honeymoon'd in Hawaii so maybe they would go back...