An amazing, perfect tour. Walked and learnt about Milanese history & architecture, then went to the Monastery and spent a fair amount of time learning about the frescoes, then went to the castle for a short visit, followed by lunch and then a visit to Duomo learning about key sculptures & glasswork. Finally took a tram to get to The Last Supper for the 15min viewing per the standard ticket.
The trip is perfectly planned, with ample time given to each location and nothing feels rushed. I have to especially commend Maria, our guide, because there were many moments when she had to rearrange the order of the plan to accommodate a family within the group. But she didn't lose her friendliness and she kept the rest of the group perfectly entertained. She was incredible even under duress.
Suggestions: Tell the group that they can use toilets at the Castle, plus break for lunch straight after that so the interested tourists can visit the Castle Museum. I managed it coz of the changed plans.