You are partly correct: Aerodux 500 is a resorcinol-phenol-formaldehyde type of glue and needs little or none tolerance between the glued surfaces.
Temperature control is at best at 20 deg Celsius or a little above. The mechanic
properties of Aerodux are sometimes better than those of epoxy
Pressure is done by way of clamping the parts
to be glued. Aerodux is not subject to UV degradation as epoxy is.
Whole boats are glued in the pre-epoxy era: Chichesters Gipsy Moth V, actually all wood laminated boats before the '88 era.
Aerodux has no 'filling' capacity. Joints must be as precise as possible. But it is a hell of a glue. Sometimes better than epoxy if you are aware of the proper use. In beams, as you stated, a definite yes!!!