Dinettes are usually put together with a small wood frame. The sides are then glued and stapled. Every camper I've had, they were screwed to the floor, screwed and glued to the walls, and were never meant to be removed.
One travel trailer I had, one dinette side pulled loose from the floor. The screws ripped out. The trailer must have done a hard flex at one time or another. I though it would be just a simple matter to drill new holes the frame that touched the floor (so the wood would not split) and simply screw back to the floor. Nope! Found it it also was connected at the walls, the back of the kitchen sink cabinet, even the wheel well was connected with glue and staples. In order to fix properly, I had to loosen everything, break all that glue out to provide the flexibility so the screws would actually reattach to the floor. They did, then I re-glued everything else.
What I'm saying is, if you have a dinette and attempt to remove it, you might just consider never re-installing it back. Chances are you'll destroy it getting it out.
