I guess it depends where the retreat is held. And how long the commute is to get there.
Taking my house as an example - I'm ~1 hour from the city center (assuming no major delays). If the retreat ended up downtown, I'd hate that. If it was on the far side of the city, I'd want to stay overnight. But, if the retreat was at the corporate office, I'd love it - as that's one mile down the road and I can walk.
This is the exact reason executives favor return-to-office. Asking remote employees to assemble just 3 days per month becomes a major hassle, see above. If a job is work-from-office every day, the employees will either figure it out or quit, any other arrangement and the logistics of when and where to meet becomes a major distraction.
That's the whole point. The executives offer remote + 3 days together, and employees like alistair complain about the 3 days as opposed to the benefit of working from home the rest of the time. So the execs say fuck it, ok just come to the office every day.
Taking my house as an example - I'm ~1 hour from the city center (assuming no major delays). If the retreat ended up downtown, I'd hate that. If it was on the far side of the city, I'd want to stay overnight. But, if the retreat was at the corporate office, I'd love it - as that's one mile down the road and I can walk.