I agree that this will definitely be hours and hours of fun.
Initially I thought that the 10 days time frame would be enough to leisurely enjoy everything. But it looks like, to enjoy this fully and attempt every round, more time would be needed to most competitors, like me, who are beginners to this level of puzzling and also have busy schedule otherwise too. So it might be good if the organizers, extend the time limit by another week, upto 28th, to include 3 week-ends, so that more number of competitors would attempt the competition in full. Knowing about the extension now before the competition begins rather than on the last day of the competition works best for scheduling purposes.