The room
Nothing here works without real dimensions, because clearances are distances between things and a square footage is an area. Measure a room in Will my guests fit? and save it, then come back.
The evening
Choose a saved room above and the clearances and the forgotten floor appear. The load-in check below needs no room — it is about the corridor, not the ballroom.
Getting it in
A 16 ft bar top does not reach the room. It stops at the tightest right-angle turn, and it stops there whatever the room measures.
- The narrowest doorwayClear
A 16 ft bar top passes a 3 ft × 7 ft opening. A doorway only ever sees the cross-section, never the length.
- The tightest right-angle turnStops here
A 16 ft bar top is 16 ft, and a 5 ft into 6 ft turn takes up to 10.5 ft. The corridor widths at either end do not help; the worst moment of the turn decides it.
The corner is the one people do not check. Two 5 ft corridors meeting at a right angle will not pass a 12 ft item, however large the room at either end — the worst moment of the turn decides it, not the corridor widths on their own.
Planning arithmetic on figures you supplied, using the same clearance table the floor-plan solver draws with — banquet — 60 in rounds of eight here allows 13.5 sq ft a guest. A venue confirms what its own room and its own dock will take.