I don't think the issue is as simple as "always has to be neat."
Ultimately, it always has to be safe.
The purpose of the event matters a great deal. If 'hosting and entertaining' is the goal (such as weddings) then a great deal of effort goes into decorating and dressing for the occasion which can be applied in equal measure to how both the people and the space are dressed.
In other events the goal may be different, and while being "neat" goes hand in hand with safety - it may not require that all items be masked or "dressed" for the purpose of decor or elegance.
I often use a table skirt not simply to hide wires, but to give myself some privacy and storage space while also making a clear barrier between my wires and other people's foot traffic.
Properly dressing wires is a hallmark of professionalism, so even in a frame tent with no other decor - fixtures flown above have wires that are neatly dressed to avoid distraction. The gear should all look like it's permanently installed if we want people to feel safe and and be impressed by our work.
To truly convey safety we have to address BOTH the mechanical installation and it's appearance because seeing is believing. (For example, consider how many people refuse to cross perfectly engineered cable or rope bridges based solely on the way they look.) We can equally undermine our own professionalism by failing to address the appearance of our own presence.