Main post updated with Saturday night meal and Sunday night meal.
About Saturday: we decided for a big place that accommodates a big group like the KOA. the place is not so near to hotel but this is good as it is on the way to go to Navigli District, in fact, after the meal I will lead the group (well, fell free to do what you prefer, there is any bond, if you want to come back to hotel, as you like) to the Navigli District, a very nice place to spend the Saturday night. Around 12.30 I will take the last metropolitan to come back to the hotel and lead there the survived people. If you miss that don't worry, there are surface urban busses that copy the metropolitan way so it is possible to reach the hotel easily though. and in case, Taxi is an option of course. specially if you share it in 4. but I would consider it as a very last options, Milan is very well connected though.
About Sunday. Can you spend an holiday in Italy without to eat a good pizza? Of course not.
I booked for 21.00 so we should have plenty of time to reach the place, that is not very near to the hotel, but I'm sure you'll be happy about the trip.
BTW, Once you are in Milan, I suggest you, I encourage you, I welcome you to buy, 4 urban tickets (1,5€ each) to use for the Saturday and Sunday meals trips, so we will not waste time waiting people looking for coins to buy tickets right when we will be in a rush!
this is just a kind remind to you
Anyway the last week before the world cup I will post a recap of the essentials. well, the first one is crystal clear: don't forget your joystick!