Just got off the Wish yesterday, and the only dead end that is worth mentioning is that of the adults only area near Cove Cafe. It dead ends near the aqua mouse on one side, and you have to walk all the way back around to get to an elevator or stairs. We found the adults area to be too crowded or too sunny most days, so the dead end didn’t impact us outside of noticing it the first day and thinking the layout was a little weird to not allow for another way out. There were other dead ends that we noticed when doing a full ship walk around, but they were outside deck areas that led nowhere. So outside of exploring the ship, we didn’t know why one would encounter these dead ends otherwise. I never felt we hit a spot and frustratedly had to turn around like others have implied outside of the adult area.