If you want to get one step further, buy an underwater casing. They don't mind sand and allow you to put the camera on the sand. Just make sure to rinse and towel the case first before you open it (in the hotel room)!
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Now that you mention it!It seems as if there is some anti reflection coating and that doesn't seem to be very hard
Canon saved some $$$ buy just putting a plastic lcd into the 6d, the 5d3 has a glass cover ... so the very first thing after buying is to stick a protective plastic cover on it or order a glass protector, ebay/China for €5...
... but don't dispair, if you put a non-reflective cover on it now the scratch won't be as visible as now.