There are a couple points I don't think you've considered.
1. From my experience working in the lower class service industry (restaurant worker), Tuesday (federal elections) is usually a pretty easy day to get off. Weekends or government holidays that the middle class gets off, are the days where everyone has to work. My understanding is that this applies to retail as well.
2. You need non-technical people to trust the system. This isn't a technical problem, it's a political problem. Having one person from each party in the room while paper ballots are counted is actually a pretty good solution for this. Showing people who haven't done any advanced math pages and pages of whitepapers and equations that mathematically prove that the system can't be hacked doesn't really give you this. The system will be completely accurate, but rumors will fly and the government is quite likely to lose legitimacy anyway.
1. From my experience working in the lower class service industry (restaurant worker), Tuesday (federal elections) is usually a pretty easy day to get off. Weekends or government holidays that the middle class gets off, are the days where everyone has to work. My understanding is that this applies to retail as well.
2. You need non-technical people to trust the system. This isn't a technical problem, it's a political problem. Having one person from each party in the room while paper ballots are counted is actually a pretty good solution for this. Showing people who haven't done any advanced math pages and pages of whitepapers and equations that mathematically prove that the system can't be hacked doesn't really give you this. The system will be completely accurate, but rumors will fly and the government is quite likely to lose legitimacy anyway.