User blog comment:LittleAlex619/Reasoning for HORRIBLE Episodes/@comment-31880197-20170915010045/@comment-34903010-20170915235151

Because in the "Sweet Spot," everyone was fighting over the sweet spot of the van. Lincoln wanted it all to himself, then his sisters know about his plan, and they fought. Then fought again until the van was destroyed resulting the parents to cancel the trip with Lincoln not earning his sweet spot.