Our base electric scope for retail spaces is a 200 amp service. This covers lighting, hot water heater, HVAC, etc. Everything is electric.
For a 1000 SF Subway sandwich shop, we upgraded to 400 amp. Again, everything is electric including their ovens.
I'm not sure how big your brewery is, but you don't want to go and size the electric to the minimum you need. You ought to plan on excess capacity as adding it later is expensive.
You are correct that this is not the type of power you want to be hooking and un-hooking with temporary cables. Set aside the risk of electrocution, those would massive cables that require special connections. I doubt running these as a temporary umbilical above ground would meet any sort of code.
FWIW, adding 400 amps right now, going from a main electric room to switch gear and a meter bank, is going to cost us over $5000 alone. There's a lot more power and equipment there than you need and it is also requiring ComEd engineers to layout and approve. If the switch gear is too far from the electric room, the main lines need to be encased in concrete. My point being, electric can snowball.