Most of the day was excellent, interactive, interesting. Plenty of opportunity for questions, really friendly knowledgeable trainer. The last 45 minutes, when we went into Power Pivot / Power Query, didn't go as smoothly: it wasn't polished.
The food ran out really quickly, we were the last cohort to go to lunch and there was no real food left. People were offered Pret vouchers which was good, but it would have been nicer to have eaten together.
Otherwise I have no complaints.