I do love a challege but there is no indication of timeline other than 'November' and capacity and logistics wise I doubt I could deliver.
Option1: Source this from the Macros as discussed previously.
Option2: Talk to the Micros, see if one of them want their name in lights!
Option3: Beoir...
The standard Homebrewer Keg is a Cornelius Keg or 'Corny' Keg which contains 19.5litres, pub kegs are 40litres, you say 5 Kegs, so you might need 10 Corny Kegs depending on how thirsty your actors are.
It could be taken on board here, but need to get some info together.
When exactly is it required? First Date - Last Date
Total Volume? 5 x 40L <=> 10 x 20L ?
Volume per night/week?
Where is it required?
Would there be space on stage(under the counter) for fridge/kegerator/Gas?
Does this have to be wheeled in and out?
Who is going to do the kegswaps/line cleaning?
What sort of beer?
3 to 4 weeks would be required to get to the first batch, from then, sequential production can roll weekly if being brewed by the same brewer.
Alternatively, 5 or 10 brewers can work from the same recipe to produce the same beer as a batch at more-or less the same time.
There is a lot of coordinating and logistics involved and costs/transport would need to be covered.
I think Option 1 or 2 is easier
Thoughts?