At the last election in Hong Kong (held a week ago), even though it was on a Sunday, one particular polling station was so bad that even though polling closed at 10:30pm, the last person in that queue only got to cast his vote at 2:30am -- over 4 hours wait.

I myself had to wait for 45 minutes that afternoon.

I guess my point is, if the government doesn't want you to vote there's all sorts of things it can do, weekends or not.