I don't know how everyone else feels, but I've had a guts fill with these 4 day weeks back to back like this.

You struggle to get the production out simply by virtue of the missing day each week.
Staff are filing for leave left right and centre, so you're down on production teams for the days you are open.
The staff that are in for work are not exactly going full steam because they're in a holiday mood.
Seems like the person I need to speak to at every supplier, debtor that missed their payment last month, and client I want booked in is on holiday and not contactable.