The area I've found this true is actual skirmish businesses, some of their websites are awful. So many occasions I've been digging and digging to find the most basic stuff. Exact location of entrance, quality of the road/car park, timings, what food is available if any, SZ arrangements, pyro rules... list goes on. Often end up scouring photo albums of the place to find out certain things, (almost vaguely) like doing a recce on an enemy target just to get answers for myself that should be super easy to locate.
And I don't use any sort of non-standard replicas or have medical considerations or have to use awkward transportation methods. I rock up in my car with a couple of AEGs, run around, will eat whatever. So it must be even worse for some folks.