If space isn't a container, where is everything happening?
It happens in the comparisons between observers, with no larger room for them to sit in. The objection runs that a network drawn on a page sits on the page, so it must sit in something. Follow that through. A room for the network would have to be built from comparisons between record-keepers, which is a network, and that room would need a room. Distance is a count of comparisons, and two observers are far apart when many comparisons separate them. A direction is a pattern in that tally, and three directions come out of how fast such patterns fade. Time goes the same way, as an order of which record read which, and that order needs no room either. Observers do the counting from inside, occupying no position in anything larger.
Also in Chapter 12: Why Is the World Made of Relations and Not of Things?.
This answer comes from OPH, Observer Patch Holography. OPH is a rigorous, consistent and complete description of the unified, self-creating computational Universe we inhabit. Its consistency is machine-checked: the fixed point at its core is constructed explicitly, and a theory with a model contains no contradiction.
To understand OPH and check every step yourself, start with the free book Reverse Engineering Reality. It builds the theory from the ground up, and the OPH Notebook answers your questions while you read.
read the free bookask the notebookor ask sage:read appendix a: Eighteen Questionswatch a universe make its own particles