That’s usually the case, although as logical as it is there’s no requirement for Strata Managers to keep notices of meetings, agendas, and minutes in the one file.
You may be surprised about how many Strata Managers still don’t keep electronic records, so your best bet would be to tell the Strata Manager precisely what records you want to see in advance of the day, and hope that they oblidge by at least making the relevant files available – and hopefully they’re not of the lever-arch variety!