Life is too short, so don't let it pass you by.
I realized that when my father passed away suddenly and violently at the age of 50....I was 32, and hadn't had nearly enough time to know him as an adult. I was comforted by the knowledge that we had a good relationship, saw each other often, and told each other how much we loved each other. So in that respect, I have no regrets.
I insisted that my mother and I take a trip together after my father died. She and I had never travelled together alone as adults (though we've spent countless hours together with spouses, children, extended family)....and after Dad died, I just knew that I shouldn't put off ANYTHING for later, because you cannot see the future and you just might regret not having done something. And guess where we went??!!? To Disney World, of course. It was her first trip...it was the two year anniversary of my father's death....and we had a magical, wonderful trip that we both will always treasure.
My father died 5 years ago. My mother, young also at 50, was blessed to find another wonderful man and remarried quickly. He's never been to Disney World either. Our family (me, husband, four kids) are taking him and my mother to the "Most Magical Place on Earth" this October. It's been a difficult journey for my family, but each year gets easier. I still miss Dad....but now when I think of him, I am not sad, but happy, for I remember all of the wonderful things that made him special to me.
So go ~ and have a wonderful time. Be at peace knowing that your mother is with you in spirit, and she is smiling down on you as you are making new memories. Be happy; life is short.