This realm uses what we learned from Realm 1's initial launch. By default, friendly fire is off, so no player can hurt another directly (although they can still mine blocks out from under their friends, etc., as a prank).
We have two mods running on Realm 3 to make things easier to manage as well: Secure Chests Addon and Realm Management Resources Addon
“Secure Chests Add-On lets you add lockable storage containers to your world! Use keys, keycards, passwords, PIN codes, and more to protect your items from other players. Safeguard your treasures with Advanced security features, ensuring only you have access! It even works with double containers featuring multiple compartments, plus we've added tall lockers for extra space!”
Read more @ https://www.bedrockexplorer.com/@the-pocalypse-studios/secure-chests-add-on
“Everything you need to manage and stay safe in your world, realm or server. RMT has multiple features to manage players, provide an enhanced SMP experience and keep your community engaged or beef up your solo world.”
https://www.bedrockexplorer.com/@tomhmagic-creations/realm-management-tool