I can't help directly, but you also need to consider how the projector lamp / shutter will be controlled and how you play back the adverts. Who is responsible for showing the adverts, it may be fine if you have an in house op, but what if a tour uses their own operator? Is the spill from a black image acceptable or will you need a proper "black out". What happens if the projector isn't lamped on, or worse doesn't get lamped off until the next day? Will these adverts need audio, in which case you'll need a feed into either a permanently installed PA or into the touring desk, that you then need to ensure is left open for the interval.
It may be possible to automate a lot of the process using arduino etc so that pressing a button will lamp on the projector, wait a suitable warm up time then open the shutter, run the VT, close the shutter and finally lamp off.
Let us know how you get on.