is it stupid to save up alot of money for an expensive trip once?

is it stupid to save up a lot of money for an expensive trip once? my dad says it is stupid of me to save up a lot of my money just for a trip to disney world i want to go with my grandma. he thinks on my salary i should not be thinking about vacations I should rather pay off all my college debt. I think that since my grandma wont be around as long as im paying off so much debt i should do things with her in the near future. im not sure if it is going to end up that my dad is right i should not say up for such expensive trips, i would really regret it if i bought my grandma and me a ticket and she dies after i buy it for her ,I would really regret it, she is close to 75.

Shayla · F

We went to Disney world this year. My mom kept saying it was too expensive and that we would only do it once.
It didn't take long for her to change her mind. Yes, it's a little pricey, but it's an experience like no other. We want to go again in two or three years.

Just a word to the wise, expect heat, humidity, and crowds. Some days are worse than others, but those three are semi permanent there.