As a lot of people are , I was also thinking of taking my laptop to DTD for Day 2 of The Monte Carlo so I could play Pokerstars $10,000,000 at the same time ....
However....having looked at things a bit closer, I have had it confirmed from Pokerstars it will be a one day event (straight through with only the normal 5 minute hourly breaks)
A normal Sunday million with 7500 ish runners last approx 12 /13 hours..so with this tournament staring at 7 .30 pm (UK Time ,Late Reg till 10.30pm) and a potential 50,000 runners ( It needs to have 50,000 players to cover the 10 million guarantee (50,000 x $200 ofc) ) I figure its going to go on for an approx 18 hours and will finish at 1. 00 pm ish Monday afternoon.
These are rough approximations....but it would be interesting to hear what other people think .
Regardless...its a long day especially if you have been, or are playing live also .
Good Luck to all that enter

Peace x