Anyone used them and have feedback? I’m really considering them for a wall tent setup to save space. I have a few questions for those with experience. With 2 people is movement really noticeable? I don’t want 2 people never sleeping because they keep each other up all night tossing and turning. How’s the height on the upper bunk? I’m curious about the stack adapters (not leg extensions) to raise the bottom bunk enough for storage underneath. But don’t want the top to be too high to get in & out. Thanks for any feedback.