Yes, you can head back up if it bothers you. I am not to keen on small places, but my tolerance point is not that low either. That said, it didn't bother me in the least. It's a reasonably roomy area. It's official name is semi submersible, but it's actually more like a boat with a lower deck, it doesn't submerge or anything. Just get a seat near the stair, once everyone's seated the middle is hard to get out of.