With this mod you don't have to go back to your place of death to get your items. As soon as you respawn they are teleported to you.
there are few caveats. If you take too long to respawn (normal item decay time) they wont be there. Also, if they are destroyed because you fell in the void or lava, or they were picked up by a monster or player you've lost them. But normally you'll get them back in whatever state they were when you died.
it should work fine on realms with multi player.