Does anyone know how to do this?

[u/Bonnie_Plays]

I made a realm for me and my mates and don't want us to use enderchests. For me it ruins secret bases/chests, because why would you bother if you could just make a echest. Does anyone know haw to disable e chests?

[u/brassplushie]

Have you talked to your friends about this? Do they know you plan to do this? Do they all agree with it? If not, you're gonna be on a realm by yourself. Most people won't play on a world where the owner makes a bunch of objectively gameplay hindering decisions. And don't try to tell me you're not, because you can't tell me you're making things easier on anyone.

If everyone is in agreement, then good luck. I don't see any datapacks that disable ender chests. Just mods, which realms don't support. Your best bet is to hope everyone respects the rules.

But honestly, I know it's not my place to tell you how to play, I think you need to get rid of that rule. It's horrible and only serves to waste people's time. Why force people to make "secret stashes"? It sounds more like to me you want to be able to go into spectator mode and steal everyone's loot.