the dinette benches on the casita are molded
fiberglass screwed to the riser under the table, and to angle brackets on the inside of the outside wall (not sure how said angle brackets are attached, as there's no rivets on the outside).
(note thats my Casita Spirit Deluxe 16... it might be slightly different on a Spirit 17, I dunno)
presumably on your Liberty(?) with buckets, the power converter and water heater switch are mounted somewhere else...