A camping weekend! Cool! I love to camp. But those weekends take it out of me! I'm sure your son is going to be somewhat worn out (even if it's one night) and thus may not enjoy the amusement park as much as he may! I would have planned the amusement park for another time.
But your main point is letting go of the useless emotions. I know that is hard. I see it with my sister, who had a horrible D. Her X is still "out to get" her. I think I've told her a million times to let it go... He's not worth it.
You can't control your X -- only yourself. Sounds a bit like the Serenity Prayer!
