If you're really that concerned get concealed Sloan valves.
No tank type toilet will be "durable" because the tank is a ~14" long lever on the tank bolts. All it takes is someone leaning back to break that connection, usually cracking the tank where the bolt holes are. You could install a spacer block behind the tank to prevent this. Then I suppose the next weak point is the lid, so caulk that down.
Or you could use the proven commercial option, a Sloan valve. If it works in a high school it will work in a bar.
A forum community dedicated to professional plumbers. Come join the discussion about the industry, safety, finishing, tools, machinery, projects, styles, scales, reviews, accessories, classifieds, and more!