Replying to Skiing, or trip to Hawaii?

Hey guys,

So i have a dilemma. In two weekends, after finals, my parents are going to Hawaii because my dad has a conference over there. I would be staying there for 4 days and miss two days of school.
That same weekend, my troop ( yes, I am a boyscout) is going skiing. We would ski for three days, and then come back
So I could either go to Hawaii for five days and miss the first two days of the semester, or go ski and not miss any school.

suggestions?