I take it that these strobes are plug in mains powered units? If they are what about a plug in timer, I use these a lot, though for different applications like oscillating fans in my workshop so they cme on before I start work and go off after I have left without me forgetting and leaving them on all weekend!
The type I use are available in 24hr and 7 day versions. This would of course require the matches to adhere to a strict schedule or require longer on periods to allow for schedule variations.
I would be very wary of running something like that for very extended periods of time unless I could get some manufacturer verification that they are warranted for this type of use, after all you wouldn't want to be trying to explain that the hall shouldn't have burnt down because Fred on a forum said the light should be ok!